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Articles de revues sur le sujet « Body metric »

Auteur : Grafiati

Publié le 9 mars 2023

Mis à jour le 31 juillet 2025

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1

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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Mehrotra, Anay, Jeff Sachs, and L. Elisa Celis. "Revisiting Group Fairness Metrics: The Effect of Networks." Proceedings of the ACM on Human-Computer Interaction 6, CSCW2 (2022): 1–29. http://dx.doi.org/10.1145/3555100.

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An increasing amount of work studies fairness in socio-technical settings from a computational perspective. This work has introduced a variety of metrics to measure fairness in different settings. Most of these metrics, however, do not account for the interactions between individuals or evaluate any underlying network's effect on the outcomes measured. While a wide body of work studies the organization of individuals into a network structure and how individuals access resources in networks, the impact of network structure on fairness has been largely unexplored. We introduce templates for grou

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Mishra, Alok, Raed Shatnawi, Cagatay Catal, and Akhan Akbulut. "Techniques for Calculating Software Product Metrics Threshold Values: A Systematic Mapping Study." Applied Sciences 11, no. 23 (2021): 11377. http://dx.doi.org/10.3390/app112311377.

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Several aspects of software product quality can be assessed and measured using product metrics. Without software metric threshold values, it is difficult to evaluate different aspects of quality. To this end, the interest in research studies that focus on identifying and deriving threshold values is growing, given the advantage of applying software metric threshold values to evaluate various software projects during their software development life cycle phases. The aim of this paper is to systematically investigate research on software metric threshold calculation techniques. In this study, el

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E. Ramya, Mrs, and Dr R. Gobinath. "Delay metric in wireless body area sensor net-works." International Journal of Engineering & Technology 7, no. 3.3 (2018): 448. http://dx.doi.org/10.14419/ijet.v7i2.33.14208.

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Wireless Sensor Networks have the potential to greatly impact many aspects of medical care. This paper focuses on fundamental idea about the Protocols, standards, Technologies and measurements taken by the Researchers in the area of Wireless Body Area Sensor. This paper also listed various constraints in Wireless Body Area Sensor Networks and noticed the best suitable techniques for analyzing the Sensor Data. The quality of service is the most fundamental characteristics of any applications like Wireless Network, Wireless Sensor Network and Wireless Body Area Network. The performance factor in

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Bradley, Michael, Gyula Fodor, Mattias Marklund, and Zoltán Perjés. "The Wahlquist metric cannot describe an isolated rotating body." Classical and Quantum Gravity 17, no. 2 (1999): 351–59. http://dx.doi.org/10.1088/0264-9381/17/2/306.

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Collar, David C., Crystal M. Reynaga, Andrea B. Ward, and Rita S. Mehta. "A revised metric for quantifying body shape in vertebrates." Zoology 116, no. 4 (2013): 246–57. http://dx.doi.org/10.1016/j.zool.2013.03.001.

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Allen Neufeld, K. "Body Measurement." Arithmetic Teacher 36, no. 9 (1989): 12–15. http://dx.doi.org/10.5951/at.36.9.0012.

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In teaching the customary units of measure, the teacher risks offering two few activities that focus on measuring or on determining relationships among units. In the metric system, relationships among units are especially important and become clear to students when we offer them the opportunity to measure many familiar objects. The human body is made up of many parts that students measure with great interest. A student's knowledge of the measures of some of these body parts can be helpful in making estimates of the measures of other objects in his or her immediate environment

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Almohammed, Huda I., Wiam Elshami, Zuhal Y. Hamd, and Mohamed Abuzaid. "Optimizing CT Abdomen–Pelvis Scan Radiation Dose: Examining the Role of Body Metrics (Waist Circumference, Hip Circumference, Abdominal Fat, and Body Mass Index) in Dose Efficiency." Tomography 10, no. 5 (2024): 643–53. http://dx.doi.org/10.3390/tomography10050049.

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Objective: This study investigates the correlation between patient body metrics and radiation dose in abdominopelvic CT scans, aiming to identify significant predictors of radiation exposure. Methods: Employing a cross-sectional analysis of patient data, including BMI, abdominal fat, waist, abdomen, and hip circumference, we analyzed their relationship with the following dose metrics: the CTDIvol, DLP, and SSDE. Results: Results from the analysis of various body measurements revealed that BMI, abdominal fat, and waist circumference are strongly correlated with increased radiation doses. Notabl

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SHARIF, M., and M. JAMIL AMIR. "TELEPARALLEL ENERGY–MOMENTUM DISTRIBUTION OF LEWIS–PAPAPETROU SPACETIMES." Modern Physics Letters A 22, no. 06 (2007): 425–33. http://dx.doi.org/10.1142/s0217732307021214.

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In this paper, we find the energy–momentum distribution of stationary axisymmetric spacetimes in the context of teleparallel theory by using Möller prescription. The metric under consideration is the generalization of the Weyl metrics called the Lewis–Papapetrou metric. The class of stationary axisymmetric solutions of the Einstein field equations has been studied by Galtsov to include the gravitational effect of an external source. Such spacetimes are also astrophysically important as they describe the exterior of a body in equilibrium. The energy density turns out to be nonvanishing and well

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Willems, Iris, Vera Verbestel, Dorothea Dumuid, Patrick Calders, Bruno Lapauw, and Marieke De Craemer. "A comparative analysis of 24-hour movement behaviors features using different accelerometer metrics in adults: Implications for guideline compliance and associations with cardiometabolic health." PLOS ONE 19, no. 9 (2024): e0309931. http://dx.doi.org/10.1371/journal.pone.0309931.

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Background Movement behavior features such as time use estimates, average acceleration and intensity gradient are crucial in understanding associations with cardiometabolic health. The aim of this study was to 1) compare movement behavior features processed by commonly used accelerometer metrics among adults (i.e. Euclidian Norm Minus One (ENMO), Mean Amplitude Deviation (MAD) and counts per minute (CPM)), 2) investigate the impact of accelerometer metrics on compliance with movement behavior guidelines, and 3) explore potential variations in the association between movement behavior features

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Hartwell, Lauren P., Annette L. Baker, Kathy J. Jenkins, Sarah D. de Ferranti, and Susan F. Saleeb. "Experience participating in the American College of Cardiology Quality NetworkTM: paediatric and adult congenital cardiology collaborative quality improvement." Cardiology in the Young 29, no. 1 (2018): 59–66. http://dx.doi.org/10.1017/s104795111800183x.

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AbstractBackgroundThe American College of Cardiology Quality Network enables national benchmarking and collaborative quality improvement through vetted metrics. We describe here our initial experience with the Quality Network.MethodsQuarterly data for metrics pertaining to chest pain, Kawasaki disease, tetralogy of Fallot, elevated body mass index, and others were shared with the collaboratives for benchmarking. National improvement efforts focussed on counselling for elevated body mass index and 22q11.2 testing in tetralogy of Fallot. Improvement strategies included developing multi-disciplin

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Suarisman, Andre, Alwis Nazir, Fadhilah Syafria, and Liza Afriyanti. "Perbandingan Jarak Metrik pada Klasifikasi Jamur Beracun Menggunakan Algoritma K-Nearest Neighbor (K-NN)." Journal of Computer System and Informatics (JoSYC) 5, no. 1 (2023): 10–19. http://dx.doi.org/10.47065/josyc.v5i1.4511.

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Mushrooms are organisms from the kingdom fungi that have a fleshy body structure and can be consumed, but there are some species of mushrooms that are not safe to eat and have specific characteristics, so distinguishing between edible and poisonous mushrooms can be tricky due to the almost identical appearance of various mushroom species. Errors in identifying edible mushrooms can impact the health of consumers who consume the mushrooms. Evaluating the performance of various methods on a dataset is a key step in determining the most suitable classification method. This research is about how to

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On, Vo Van. "Absence of Singularity in Schwarzschild Metric in the Vector Model for Gravitational Field." Communications in Physics 18, no. 3 (2012): 175–84. http://dx.doi.org/10.15625/0868-3166/18/3/14157.

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In this paper, based on the vector model for gravitational field we deduce an equation to determinate the metric of space-time. This equation is similar to equation of Einstein. The metric of space-time outside a static spherically symmetric body is also determined. It gives a small supplementation to the Schwarzschild metric in General theory of relativity but the singularity does not exist. Especially, this model predicts the existence of a new universal body after a black hole.

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Wu, Dian, Riccardo Rossi, Filippo Vicentini, et al. "Variational benchmarks for quantum many-body problems." Science 386, no. 6719 (2024): 296–301. http://dx.doi.org/10.1126/science.adg9774.

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The continued development of computational approaches to many-body ground-state problems in physics and chemistry calls for a consistent way to assess its overall progress. In this work, we introduce a metric of variational accuracy, the V-score, obtained from the variational energy and its variance. We provide an extensive curated dataset of variational calculations of many-body quantum systems, identifying cases where state-of-the-art numerical approaches show limited accuracy and future algorithms or computational platforms, such as quantum computing, could provide improved accuracy. The V-

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Friedman, Yaakov, and Esra Yudkin. "Testing Relativistic Time Dilation beyond the Weak-Field Post-Newtonian Approximation." Symmetry 12, no. 4 (2020): 500. http://dx.doi.org/10.3390/sym12040500.

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In General Relativity, the gravitational field of a spherically symmetric non-rotating body is described by the Schwarzschild metric. This metric is invariant under time reversal, which implies that the power series expansion of the time dilation contains only even powers of v / c . The weak-field post-Newtonian approximation defines the relativistic time dilation of order ϵ (or of order ( v / c ) 2 ) of the small parameter. The next non-zero term of the time dilation is expected to be of order ϵ 2 , which is impossible to measure with current technology. The new model presented here, called R

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Firsov, M., N. Rodin, A. Rykhlov, V. Avdeenko, and V. Akhmadov. "Metabolic changes in the body of cows of patients with metric in the early postpartum period." Genetics and breeding of animals, no. 2 (July 18, 2021): 16–21. http://dx.doi.org/10.31043/2410-2733-2021-2-16-21.

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Purpose: Determination of changes in metabolic status in new-fluxed cows and twisters when metric and the role of oxidant stress in the pathogenesis of inflammation of the uterus.Materials and methods. The two groups of animals 15 goals were investigated in each. The clinical diagnosis of an acute metric in cows and first elevators in the early postpartum period was carried out in cancer of obstetric and gynecological examinations. Blood fences for hematological studies took from cows before morning feeding. General ketone bodies (OCT), beta-hydroxyma acid (BH), acetone with acetoxus acid (ACA

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Giachetti, Andrea, Luca Isaia, and Valeria Garro. "Multiscale descriptors and metric learning for human body shape retrieval." Visual Computer 32, no. 6-8 (2016): 693–703. http://dx.doi.org/10.1007/s00371-016-1234-z.

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Romano, Daniele, Elena Uberti, Pietro Caggiano, Gianna Cocchini, and Angelo Maravita. "Different tool training induces specific effects on body metric representation." Experimental Brain Research 237, no. 2 (2018): 493–501. http://dx.doi.org/10.1007/s00221-018-5405-1.

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Johnsy, J., and M. Jeyaraman. "Wijsman Ideal Convergence Sequence in Neutrosophic Metric Spaces." Indian Journal Of Science And Technology 17, SPI1 (2024): 71–78. http://dx.doi.org/10.17485/ijst/v17sp1.135.

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Objectives: An examination of convergence for a sequence of closed sets in Neutrosophic Metric Spaces is the main goal of this research. Particularly, the focus of this study is directed at Wijsman -convergence ( and Wijsman -convergence . Methods: The various properties of Neutrosophic Metric Spaces are investigated in this study. Using exact mathematical techniques, this study comprehends the features of convergent sequences in these domains. Furthermore, this study expresses particular views on Wijsman -Cauchy and Wijsman -Cauchy sequences. Findings: The convergence behaviour of closed sets

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Frutos-Alfaro, Francisco, Pedro Gómez-Ovares, and Paulo Montero-Camacho. "Approximate Kerr-Newman-like metric with quadrupole." Revista de Matemática: Teoría y Aplicaciones 28, no. 2 (2021): 295–310. http://dx.doi.org/10.15517/rmta.v28i2.37152.

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The Kerr metric is known to have issues when trying to find a physical interior solution. In this work we continue our efforts to construct a more realistic exterior metric for astrophysical objects. A new approximate metric representing the spacetime of a charged, rotating and slightly-deformed body is obtained by perturbing the Kerr-Newman metric to include the mass-quadrupole and quadrupole-quadrupole orders. It has a simple form because it is Kerr-Newman-like.

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Fedosin, Sergey G. "Energy and metric gauging in the covariant theory of gravitation." Aksaray University Journal of Science and Engineering 2, no. 2 (2018): 00. https://doi.org/10.29002/asujse.433947.

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Relations for the relativistic energy and metric are analyzed inside and outside the body in the framework of the covariant theory of gravitation. The methods of optimal energy gauging and equations for the metric are chosen. It is shown that for the matter inside the body a procedure is required to average the physical quantities, including the cosmological constant and the scalar curvature. For the case of the relativistic uniform system, the cosmological constant and the scalar curvature are explicitly calculated, which turn out to be constant values inside the body and are assumed to be eq

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Larochelle, P., and J. M. McCarthy. "Planar Motion Synthesis Using an Approximate Bi-Invariant Metric." Journal of Mechanical Design 117, no. 4 (1995): 646–51. http://dx.doi.org/10.1115/1.2826735.

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In this paper we present a technique for using a bi-invariant metric in the image space of spherical displacements for designing planar mechanisms for n (> 5) position rigid body guidance. The goal is to perform the dimensional synthesis of the mechanism such that the distance between the position and orientation of the guided body to each of the n goal positions is minimized. Rather than measure these distances in the plane, we introduce an approximating sphere and identify rotations which are equivalent to the planar displacements to a specified tolerance. We then measure distances betwee

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Coccia, Cristina, Carlos Vega, and Pablo Fierro. "Macroinvertebrate-Based Biomonitoring of Coastal Wetlands in Mediterranean Chile: Testing Potential Metrics Able to Detect Anthropogenic Impacts." Water 14, no. 21 (2022): 3449. http://dx.doi.org/10.3390/w14213449.

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Coastal wetlands are suffering from anthropogenic alterations worldwide. Aquatic monitoring based on macroinvertebrates has been successfully used to assess the ecological condition of many aquatic systems worldwide. Nonetheless, studies are still insufficient for the coastal wetlands of the South Pacific. Here, we present a preliminary attempt to select metrics based on aquatic macroinvertebrates to incorporate into coastal wetlands biomonitoring in the Chilean Mediterranean ecoregion. We sampled 25 sites in ten coastal wetlands during the austral spring of 2019. We used an integrated index t

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Wei, Terence, and Hans Dorfi. "Identification of Tire Force and Moment (F&M) Characteristics That Improve Combined Slip Handling Performance." Tire Science and Technology 47, no. 1 (2019): 55–76. http://dx.doi.org/10.2346/tire.19.160109.

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ABSTRACT Since tires generate the control forces required for the operation of a vehicle, the tire force and moment (F&M) characteristics have to be designed such that the vehicle can easily be kept under driver control under many driving conditions. However, the relationship between F&M characteristics and vehicle handling performance is not well understood for many driving maneuvers. A better understanding of this relationship would thus provide insight into how to improve the matching between tires and vehicles for increased vehicle stability. Building a large number of tires with d

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Gumelar, Syahrul Fadholi, Eca Indah Anggraini, and Eca Indah Anggraini. "Estimating the weight of Ongole crossbreed cattle based on image data using CNN and linear regression methods." Sunan Kalijaga Journal of Physics 5, no. 2 (2023): 51–62. https://doi.org/10.14421/physics.v5i2.3717.

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One of the contributors to the need for food, especially meat, is the Ongole breed of cattle or commonly known as PO cattle. In these livestock activities it is necessary to monitor the weight of the cattle with the aim of assessing the selling price of the cattle and knowing the health condition of the cattle. Currently breeders are still using traditional methods such as forecasts or scales in measuring the weight of cattle. Therefore, in this study using a camera sensor as an alternative instrument for measuring cattle weight. The stages of the research included image data acquisition, pre-

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Kim, Beom-Su, Babar Shah, Feras Al-Obediat, Sana Ullah, Kyong Kim, and Ki-Il Kim. "An Enhanced Mobility and Temperature Aware Routing Protocol through Multi-Criteria Decision Making Method in Wireless Body Area Networks." Applied Sciences 8, no. 11 (2018): 2245. http://dx.doi.org/10.3390/app8112245.

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In wireless body area networks, temperature-aware routing plays an important role in preventing damage of surrounding body tissues caused by the temperature rise of the nodes. However, existing temperature-aware routing protocols tend to choose the next hop according to the temperature metric without considering transmission delay and data loss caused by human posture. To address this problem, multiple research efforts exploit different metrics such as temperature, hop count and link quality. Because their approaches are fundamentally based on simple computation through weighted factor for eac

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Jierula, Alipujiang, Shuhong Wang, Tae-Min OH, and Pengyu Wang. "Study on Accuracy Metrics for Evaluating the Predictions of Damage Locations in Deep Piles Using Artificial Neural Networks with Acoustic Emission Data." Applied Sciences 11, no. 5 (2021): 2314. http://dx.doi.org/10.3390/app11052314.

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Accuracy metrics have been widely used for the evaluation of predictions in machine learning. However, the selection of an appropriate accuracy metric for the evaluation of a specific prediction has not yet been specified. In this study, seven of the most used accuracy metrics in machine learning were summarized, and both their advantages and disadvantages were studied. To achieve this, the acoustic emission data of damage locations were collected from a pile hit test. A backpropagation artificial neural network prediction model for damage locations was trained with acoustic emission data usin

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Badby, Andrew J., Nicholas J. Ripley, John J. McMahon, Peter D. Mundy, and Paul Comfort. "Scoping review of methods of monitoring acute changes in lower body neuromuscular function via force plates." PLOS One 20, no. 5 (2025): e0322820. https://doi.org/10.1371/journal.pone.0322820.

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Force plates are amongst the most utilised technological apparatus for monitoring acute changes in neuromuscular function in sports. Practitioners apply monitoring strategies to manage neuromuscular fatigue and physical preparedness with valid, reliable, and sensitive measures. The aim of this scoping review was to identify, map, and describe the variety of monitoring procedures which have been previously applied in research (e.g., test and metric selection, data collection, study design, and data analysis procedures). Searches were completed by 24th June 2024. One thousand, nine hundred, and

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PESONEN, JANNE. "HAMILTONIANS IN OBLIQUE BODY-FRAME: A GEOMETRIC ALGEBRA APPROACH." Journal of Theoretical and Computational Chemistry 04, no. 04 (2005): 1057–74. http://dx.doi.org/10.1142/s0219633605001921.

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In this work, I present a practical way to obtain the vibration-rotation kinetic energy operator for an N-atomic molecule in an arbitrary body-frame [Formula: see text]. The body-frame need not be orthogonal or rigid. In practice, I derive the explicit form of the measuring vectors associated with the body-frame components of the internal angular momentum. Their inner products with the vector derivatives of the shape coordinates give the "Coriolis" part of the metric tensor appearing in the Hamiltonian, and their inner products among themselves give the "rotational" part. As a simple example,

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Rozas, Alba, Alvaro Araujo, and Jan M. Rabaey. "Analyzing the Performance of WBAN Links during Physical Activity Using Real Multi-Band Sensor Nodes." Applied Sciences 11, no. 7 (2021): 2920. http://dx.doi.org/10.3390/app11072920.

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Wireless body area networks (WBANs) present unique challenges due to their specific characteristics of mobility and over-the-body radio propagation. A huge amount of factors—both internal and external to the network—affect WBAN channel conditions, so a reliable and comprehensive theoretical model of these communications is unfeasible and impractical in real scenarios. Thus, an empirical performance analysis of several WBAN channels is presented in this work, based on the receiver signal strength indicator (RSSI) and packet reception rate (PRR) metrics. Four different static and dynamic activit

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Bonnard, Bernard, Olivier Cots, and Nataliya Shcherbakova. "The Serret-Andoyer Riemannian metric and Euler-Poinsot rigid body motion." Mathematical Control & Related Fields 3, no. 3 (2013): 287–302. http://dx.doi.org/10.3934/mcrf.2013.3.287.

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Field, Alison E., Nan Laird, Emily Steinberg, Erica Fallon, Mariama Semega-Janneh, and Jack A. Yanovski. "Which Metric of Relative Weight Best Captures Body Fatness in Children?" Obesity Research 11, no. 11 (2003): 1345–52. http://dx.doi.org/10.1038/oby.2003.182.

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D, Raja, and Vedapriya Dande Rajasekar. "Reevaluating Health Metrics: A Multi-Dimensional Approach Beyond BMI." National Journal of Community Medicine 14, no. 10 (2023): 697–99. http://dx.doi.org/10.55489/njcm.141020233272.

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Body Mass Index (BMI) has long served as a conventional metric to assess overall health, but its limitations have spurred a demand for more comprehensive health evaluation tools. This article investigates the shortcomings of BMI, such as its disregard for body composition, age, gender disparities, and potential ethnic biases. By focusing on alternative indicators of health, such as waist-to-hip ratio, body composition analysis, and cardiorespiratory fitness, we highlight the need for a more holistic health assessment. Emphasizing personalized healthcare, this article advocates for integrating

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McCabe, Lindsie M., Natalie K. Boyle, Morgan B. Scalici, and Theresa L. Pitts-Singer. "Adult body size measurement redundancies in Osmia lignaria and Megachile rotundata (Hymenoptera: Megachilidae)." PeerJ 9 (November 2, 2021): e12344. http://dx.doi.org/10.7717/peerj.12344.

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Metrics to assess relative adult bee body size have included both mass and morphometrics, but these metrics may not equally or reliably estimate body size for all bee species and in all situations, due to bee age, diet, and/or environment. Understanding the relationships between different metrics and possible redundancies in the information they afford is important but not always known. Body size measurements provide valuable data for interpreting research outcomes for managed solitary bees, including Osmia lignaria Say and Megachile rotundata F. (Hymenoptera: Megachilidae). Applied studies of

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Hawkins-Daarud, Andrea, Sandra K. Johnston, and Kristin R. Swanson. "Quantifying Uncertainty and Robustness in a Biomathematical Model–Based Patient-Specific Response Metric for Glioblastoma." JCO Clinical Cancer Informatics, no. 3 (December 2019): 1–8. http://dx.doi.org/10.1200/cci.18.00066.

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Purpose Glioblastomas, lethal primary brain tumors, are known for their heterogeneity and invasiveness. A growing body of literature has been developed demonstrating the clinical relevance of a biomathematical model, the proliferation-invasion model, of glioblastoma growth. Of interest here is the development of a treatment response metric, days gained (DG). This metric is based on individual tumor kinetics estimated through segmented volumes of hyperintense regions on T1-weighted gadolinium-enhanced and T2-weighted magnetic resonance images. This metric was shown to be prognostic of time to p

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Lind, Mats, Geoffrey P. Bingham, and Camilla Forsell. "Metric 3D Structure in Visualizations." Information Visualization 2, no. 1 (2003): 51–57. http://dx.doi.org/10.1057/palgrave.ivs.9500038.

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A large body of results on the characteristics of human spatial vision suggests that space perception is distorted. Recent studies indicate that the geometry of visual space is best understood as affine. If this is the case, it has far-reaching implications on how 3D visualizations can be successfully employed. For instance, all attempts to build visualization systems where users are expected to discover relations based on Euclidean distances or shapes will be ineffective. Since visualization can, and sometimes does, employ all possible types of depth information and because the results from v

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Ederer, David J., Michael O. Rodgers, Michael P. Hunter, and Kari E. Watkins. "Case Study using Probe Vehicle Speeds to Assess Roadway Safety in Georgia." Transportation Research Record: Journal of the Transportation Research Board 2674, no. 11 (2020): 554–62. http://dx.doi.org/10.1177/0361198120948858.

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Speed is a primary risk factor for road crashes and injuries. Previous research has attempted to ascertain the relationship between individual vehicle speeds, aggregated speeds, and crash frequency on roadways. Although there is a large body of research linking vehicle speeds to safety outcomes, there is not a widely applied performance metric for safety based on regularly reported speeds. With the increasingly widespread availability of probe vehicle speed data, there is an opportunity to develop network-level safety performance metrics. This analysis examined the relationship between percent

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Larochelle, Pierre M., Andrew P. Murray, and Jorge Angeles. "A Distance Metric for Finite Sets of Rigid-Body Displacements via the Polar Decomposition." Journal of Mechanical Design 129, no. 8 (2006): 883–86. http://dx.doi.org/10.1115/1.2735640.

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An open research question is how to define a useful metric on the special Euclidean group SE(n) with respect to: (1) the choice of coordinate frames and (2) the units used to measure linear and angular distances that is useful for the synthesis and analysis of mechanical systems. We discuss a technique for approximating elements of SE(n) with elements of the special orthogonal group SO(n+1). This technique is based on using the singular value decomposition (SVD) and the polar decompositions (PD) of the homogeneous transform representation of the elements of SE(n). The embedding of the elements

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Frutos-Alfaro, Francisco, and Michael Soffel. "On relativistic multipole moments of stationary space–times." Royal Society Open Science 5, no. 7 (2018): 180640. http://dx.doi.org/10.1098/rsos.180640.

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Among the known exact solutions of Einstein's vacuum field equations the Manko–Novikov and the Quevedo–Mashhoon metrics might be suitable ones for the description of the exterior gravitational field of some real non-collapsed body. A new proposal to represent such exterior field is the stationary q -metric. In this contribution, we computed by means of the Fodor–Hoenselaers–Perjés formalism the lowest 10 relativistic multipole moments of these metrics. Corresponding moments were derived for the static vacuum solutions of Gutsunayev–Manko and Hernández–Martín. A direct comparison between the mu

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Makwaru, Shabani, Muhammed Raji, Marco Mpimbo та Yahaya Danjuma. "Fixed Point Results for β-ψ- φ Contractive Mappings in F-Metric Spaces with L-Fuzzy Mappings". Tanzania Journal of Science 51, № 1 (2025): 53–64. https://doi.org/10.4314/tjs.v51i1.5.

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In this paper, we explore the framework of -metric space, a well-known generalization of metric spaces, and establish fixed point results for - - contractive mappings in a complete -metric spaces endowed with L-fuzzy mappings. These additions broaden the body of knowledge in fixed point theory and fuzzy mappings. We showcase the practical applicability of our proposed results through illustrative examples and also, explore as an application, the solution for fuzzy initial-value problems.

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Omar, Yamila M., and Peter Plapper. "A Survey of Information Entropy Metrics for Complex Networks." Entropy 22, no. 12 (2020): 1417. http://dx.doi.org/10.3390/e22121417.

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Information entropy metrics have been applied to a wide range of problems that were abstracted as complex networks. This growing body of research is scattered in multiple disciplines, which makes it difficult to identify available metrics and understand the context in which they are applicable. In this work, a narrative literature review of information entropy metrics for complex networks is conducted following the PRISMA guidelines. Existing entropy metrics are classified according to three different criteria: whether the metric provides a property of the graph or a graph component (such as t

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