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Journal articles on the topic 'Body axes'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Anderson, K. "One signal, two body axes." Science 269, no. 5223 (1995): 489–90. http://dx.doi.org/10.1126/science.7542799.

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2

Cole, G. K., B. M. Nigg, J. L. Ronsky, and M. R. Yeadon. "Application of the Joint Coordinate System to Three-Dimensional Joint Attitude and Movement Representation: A Standardization Proposal." Journal of Biomechanical Engineering 115, no. 4A (1993): 344–49. http://dx.doi.org/10.1115/1.2895496.

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The selection of an appropriate and/or standardized method for representing 3-D joint attitude and motion is a topic of popular debate in the field of biomechanics. The joint coordinate system (JCS) is one method that has seen considerable use in the literature. The JCS consists of an axis fixed in the proximal segment, an axis fixed in the distal segment, and a “floating” axis. There has not been general agreement in the literature on how to select the body fixed axes of the JCS. The purpose of this paper is to propose a single definition of the body fixed axes of the JCS. The two most common

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3

STEVANOVIĆ HEDRIH, KATICA R. "VECTOR METHOD BASED ON MASS MOMENT VECTORS AND VECTOR ROTATORS APPLIED TO RIGID-BODY MULTI-COUPLED ROTATIONS AROUND NONINTERSECTING AXES." International Journal of Structural Stability and Dynamics 13, no. 07 (2013): 1340007. http://dx.doi.org/10.1142/s0219455413400075.

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The first part of the paper contains a short review of a series of published papers in the area of system dynamics with coupled rotations as well as of a series of author's various published research results in the area of vector method based on the mass inertia moment vectors and corresponding deviational vector components and vector rotators for the pole and oriented axis, introduced and defined by K. Hedrih in 1991. The vector with principal importance is vector of the rigid body mass inertia moment at the point and for the axis oriented by the unit vector, and with a corresponding componen

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4

Lin, Yi-shih, and Parviz E. Nikravesh. "Deformable Body Model Reduction with Mean-Axes." Mechanics Based Design of Structures and Machines 34, no. 4 (2006): 469–88. http://dx.doi.org/10.1080/15397730601044929.

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5

Dan, B. J., and Y. J. Choi. "Vibration analysis of single rigid-body systems having planes of symmetry." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 216, no. 6 (2002): 629–41. http://dx.doi.org/10.1243/095440602320192283.

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By taking a geometrical approach to vibration analysis, the vibration mode shapes of a single rigid body may be better understood. From the geometrical point of view, the eigenvectors represent repetitive twisting motions on the axes of vibrations in a three-dimensional space. The frequency response can be expressed by a scalar multiple of the axis of vibration in Plücker's axis coordinates, which is the reciprocal product of the axis of vibration and applied force. The geometrical interpretation of the frequency response provides the design methodology to eliminate the undesired peaks. The me

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6

Li, Wu Gang. "Finding Principal Axes of Complex Plane Rigid Body with Rending-Image of MATLAB." Advanced Materials Research 490-495 (March 2012): 2156–59. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.2156.

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In order to find the principal axes of inertia and calculate their moment of inertia to any plane homogeneous rigid body for calculating easily the moment of inertia to any axis of this rigid body, the principal axes could be found and their moment of inertia could be calculated automatically by using the reading-image of MATLAB to read the image messages about the flat surface of the rigid body and by the procedures which ware made according to the logic relation about the principal axis and the moment of inertia of the rigid body. Applying this method in a homogeneous cube, a result was acqu

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7

Takaoka, Katsuyoshi, Masamichi Yamamoto, and Hiroshi Hamada. "Origin of body axes in the mouse embryo." Current Opinion in Genetics & Development 17, no. 4 (2007): 344–50. http://dx.doi.org/10.1016/j.gde.2007.06.001.

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8

Veljović, Ljiljana, Aleksandar Radaković, Dragan Milosavljević, and Gordana Bogdanović. "Rigid body coupled rotation around no intersecting axes." International Journal of Non-Linear Mechanics 73 (July 2015): 100–107. http://dx.doi.org/10.1016/j.ijnonlinmec.2014.11.001.

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9

Darling, W. G., and Jan M. Hondzinski. "Kinesthetic perceptions of earth- and body- fixed axes." Experimental Brain Research 126, no. 3 (1999): 417–30. http://dx.doi.org/10.1007/s002210050748.

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10

Leirós-Rodríguez, Raquel, Vicente Romo-Pérez, Jose L. García-Soidán, and Anxela Soto-Rodríguez. "Identification of Body Balance Deterioration of Gait in Women Using Accelerometers." Sustainability 12, no. 3 (2020): 1222. http://dx.doi.org/10.3390/su12031222.

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This study presents a simple methodology for the evaluation of gait with accelerometers, for rapid and simple application, in which we employ current balance tests in clinical practice (Timed Up and Go, Chair Stand Test and Six-Minute Walk Test). The aim was to determine whether the accelerometric valuation of gait can detect alterations in balance. The sample of this cross-sectional research, made during the months of May and June 2018, was composed of 145 healthy adult women (x = 63.8 ± 8.41 years), from the city of Ourense (Spain). They walked with a triaxial accelerometer at the fourth lum

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11

Hedrih, Katica R. (Stevanović), and Ljiljana Veljović. "Vector Rotators of Rigid Body Dynamics with Coupled Rotations around Axes without Intersection." Mathematical Problems in Engineering 2011 (2011): 1–26. http://dx.doi.org/10.1155/2011/351269.

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Vector method based on mass moment vectors and vector rotators coupled for pole and oriented axes is used for obtaining vector expressions for kinetic pressures on the shaft bearings of a rigid body dynamics with coupled rotations around axes without intersection. Mass inertia moment vectors and corresponding deviational vector components for pole and oriented axis are defined by K. Hedrih in 1991. These kinematical vectors rotators are defined for a system with two degrees of freedom as well as for rheonomic system with two degrees of mobility and one degree of freedom and coupled rotations a

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12

Di Mambro, Riccardo, Sabrina Sabatini, and Raffaele Dello Ioio. "Patterning the Axes: A Lesson from the Root." Plants 8, no. 1 (2018): 8. http://dx.doi.org/10.3390/plants8010008.

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How the body plan is established and maintained in multicellular organisms is a central question in developmental biology. Thanks to its simple and symmetric structure, the root represents a powerful tool to study the molecular mechanisms underlying the establishment and maintenance of developmental axes. Plant roots show two main axes along which cells pass through different developmental stages and acquire different fates: the root proximodistal axis spans longitudinally from the hypocotyl junction (proximal) to the root tip (distal), whereas the radial axis spans transversely from the vascu

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13

Schulz, André, Dana Schultchen, and Claus Vögele. "Interoception, Stress, and Physical Symptoms in Stress-Associated Diseases." European Journal of Health Psychology 27, no. 4 (2020): 132–53. http://dx.doi.org/10.1027/2512-8442/a000063.

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Abstract. The brain and peripheral bodily organs continuously exchange information. Exemplary, interoception refers to the processing and perception of ascending information from the body to the brain. Stress responses involve a neurobehavioral cascade, which includes the activation of peripheral organs via neural and endocrine pathways and can thus be seen as an example for descending information on the brain-body axis. Hence, the interaction of interoception and stress represents bi-directional communication on the brain-body axis. The main hypothesis underlying this review is that the dysre

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14

Van Loan, M., T. Lohman, D. Williams, et al. "BIOELECTRICAL IMPEDANCE ANALYSIS: MEASUREMENT OF BODY AXES FOR THE PREDICTION OF BODY COMPOSITION." Medicine and Science in Sports and Exercise 21, Supplement (1989): S38. http://dx.doi.org/10.1249/00005768-198904001-00228.

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15

Leine, Remco I., Giuseppe Capobianco, Perry Bartelt, Marc Christen, and Andrin Caviezel. "Stability of rigid body motion through an extended intermediate axis theorem: application to rockfall simulation." Multibody System Dynamics 52, no. 4 (2021): 431–55. http://dx.doi.org/10.1007/s11044-021-09792-y.

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AbstractThe stability properties of a freely rotating rigid body are governed by the intermediate axis theorem, i.e., rotation around the major and minor principal axes is stable whereas rotation around the intermediate axis is unstable. The stability of the principal axes is of importance for the prediction of rockfall. Current numerical schemes for 3D rockfall simulation, however, are not able to correctly represent these stability properties. In this paper an extended intermediate axis theorem is presented, which not only involves the angular momentum equations but also the orientation of t

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16

Ro, Hyunju, Tae-Lin Hur, and Myungchull Rhee. "Ubiquitin conjugation system for body axes specification in vertebrates." Animal Cells and Systems 19, no. 2 (2015): 87–95. http://dx.doi.org/10.1080/19768354.2015.1026399.

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17

Amer, T. S., and I. M. Abady. "On the motion of a gyro in the presence of a Newtonian force field and applied moments." Mathematics and Mechanics of Solids 23, no. 9 (2017): 1263–73. http://dx.doi.org/10.1177/1081286517716734.

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This work focuses on the motion of a dynamical model that consists of a symmetric rigid body (gyro) that rotates about a fixed point similar to Lagrange’s gyroscope. This body is acted upon by external forces represented by a Newtonian force field, gyro torques about the principal axes of inertia of the gyro and perturbing moments acting on the same axes. Assuming that, the gyro initially has a high angular velocity about the dynamic axis of symmetry. The averaging technique is used to obtain a more appropriate averaging system for the governing system of equations of motion in terms of a smal

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18

Linton, Carol, William Holderbaum, and James Biggs. "Rigid Body Trajectories in Different 6D Spaces." ISRN Mathematical Physics 2012 (July 30, 2012): 1–21. http://dx.doi.org/10.5402/2012/467520.

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The objective of this paper is to show that the group with an imposed Lie-Poisson structure can be used to determine the trajectory in a spatial frame of a rigid body in Euclidean space. Identical results for the trajectory are obtained in spherical and hyperbolic space by scaling the linear displacements appropriately since the influence of the moments of inertia on the trajectories tends to zero as the scaling factor increases. The semidirect product of the linear and rotational motions gives the trajectory from a body frame perspective. It is shown that this cannot be used to determine the

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19

Hageman, Kristin N., Margaret R. Chow, Dale Roberts, and Charles C. Della Santina. "Binocular 3D otolith-ocular reflexes: responses of normal chinchillas to tilt and translation." Journal of Neurophysiology 123, no. 1 (2020): 243–58. http://dx.doi.org/10.1152/jn.00882.2018.

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Head rotation, translation, and tilt with respect to a gravitational field elicit reflexive eye movements that partially stabilize images of Earth-fixed objects on the retinas of humans and other vertebrates. Compared with the angular vestibulo-ocular reflex, responses to translation and tilt, collectively called the otolith-ocular reflex (OOR), are less completely characterized, typically smaller, generally disconjugate (different for the 2 eyes) and more complicated in their relationship to the natural stimuli that elicit them. We measured binocular 3-dimensional OOR responses of 6 alert nor

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20

Kim, Donghoon, James D. Turner, and Henzeh Leeghim. "Reorientation of Asymmetric Rigid Body Using Two Controls." Mathematical Problems in Engineering 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/708935.

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Most spacecrafts are designed to be maneuvered to achieve pointing goals. This is accomplished usually by designing a three-axis control system, which can achieve arbitrary maneuvers, where the goal is to repoint the spacecraft and match a desired angular velocity at the end of the maneuver. New control laws are required, however, if one of the three-axis control actuators fails. This paper explores suboptimal maneuver strategies when only two control torque inputs are available. To handle this underactuated system control problem, the three-axis maneuver strategy is transformed to two success

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21

Weber, R. J., R. A. Pedersen, F. Wianny, M. J. Evans, and M. Zernicka-Goetz. "Polarity of the mouse embryo is anticipated before implantation." Development 126, no. 24 (1999): 5591–98. http://dx.doi.org/10.1242/dev.126.24.5591.

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In most species, the polarity of an embryo underlies the future body plan and is determined from that of the zygote. However, mammals are thought to be an exception to this; in the mouse, polarity is generally thought to develop significantly later, only after implantation. It has not been possible, however, to relate the polarity of the preimplantation mouse embryo to that of the later conceptus due to the lack of markers that endure long enough to follow lineages through implantation. To test whether early developmental events could provide cues that predict the axes of the postimplantation

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22

Simpson, M., and I. A. Gorlach. "A Kinematic Model for Volumetric Error Estimation of a Special Purpose CNC Machine." Applied Mechanics and Materials 232 (November 2012): 367–71. http://dx.doi.org/10.4028/www.scientific.net/amm.232.367.

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This research reports on error identification and compensation of a special purpose CNC machine. The kinematic model of the machine was developed using rigid body kinematics and small angle approximation of the axes of the machine through homogenous transform matrices, and the equations describing the volumetric errors. The machine was calibrated to measure the axes errors, which were used in the kinematic model in order to determine compensation values. The model was evaluated by means of direct measurements of axis movements using a laser interferometer, as well as in cutting tests, where a

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23

Takahashi, Yu, Nicholas Bradley, and Brian Kennedy. "Determination of Celestial Body Principal Axes via Gravity Field Estimation." Journal of Guidance, Control, and Dynamics 40, no. 12 (2017): 3050–60. http://dx.doi.org/10.2514/1.g002877.

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24

Hamada, Hiroshi. "S10-01 Origin of body axes in the mouse embryo." Mechanisms of Development 126 (August 2009): S10. http://dx.doi.org/10.1016/j.mod.2009.06.966.

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25

Rogol, A. D. "Growth, body composition and hormonal axes in children and adolescents." Journal of Endocrinological Investigation 26, no. 9 (2003): 855–60. http://dx.doi.org/10.1007/bf03345236.

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26

Takebayashi-Suzuki, Kimiko, and Atsushi Suzuki. "Intracellular Communication among Morphogen Signaling Pathways during Vertebrate Body Plan Formation." Genes 11, no. 3 (2020): 341. http://dx.doi.org/10.3390/genes11030341.

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During embryonic development in vertebrates, morphogens play an important role in cell fate determination and morphogenesis. Bone morphogenetic proteins (BMPs) belonging to the transforming growth factor-β (TGF-β) family control the dorsal–ventral (DV) patterning of embryos, whereas other morphogens such as fibroblast growth factor (FGF), Wnt family members, and retinoic acid (RA) regulate the formation of the anterior–posterior (AP) axis. Activation of morphogen signaling results in changes in the expression of target genes including transcription factors that direct cell fate along the body

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27

Goates, Blair J., and James A. Hoffmann. "Spindle pole body fusion in the smut fungus Tilletia foetida." Canadian Journal of Botany 64, no. 6 (1986): 1221–23. http://dx.doi.org/10.1139/b86-166.

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Fusion of double-structured, interphase spindle pole bodies (SPBs) occurred before nuclear fusion in heterokaryotic secondary sporidia. The SPBs of two separate nuclei were juxtaposed with their long axes perpendicular to each other. Also, SPBs were observed oriented with their long axes parallel and fused to each other at both ends. Fusion apparently continued toward the midportion of the SPBs. Nuclei were observed joined together in a narrow region. These nuclei appeared to share a single SPB that was located opposite to a protuberance on both nuclei. Following fusion, the SPB apparently ret

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28

Thapa, R. R. "The Stability of Solutions of Sitnikov Restricted Problem of three Bodies When the Primaries are Triaxial Rigid Bodies." Journal of Institute of Science and Technology 19, no. 2 (2015): 76–78. http://dx.doi.org/10.3126/jist.v19i2.13856.

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The paper deals with the stability of the solutions of Sitnikov's restricted problem of three bodies if the primaries are triaxial rigid bodies. The infinitesimal mass is moving in space and is being influenced by motion of two primaries (m1>m2). They move in circular orbits without rotation around their centre of mass. Both primaries are considered as axis symmetric bodies with one of the axes as axis of symmetry whose equatorial plane coincides with motion of the plane. The synodic system of co-ordinates initially coincides with inertial system of co-ordinates. It is also supposed that in

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29

Masseck, Olivia Andrea, and Klaus-Peter Hoffmann. "Responses to Moving Visual Stimuli in Pretectal Neurons of the Small-Spotted Dogfish (Scyliorhinus canicula)." Journal of Neurophysiology 99, no. 1 (2008): 200–207. http://dx.doi.org/10.1152/jn.00926.2007.

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Single-unit recordings were performed from a retinorecipient pretectal area (corpus geniculatum laterale) in Scyliorhinus canicula. The function and homology of this nucleus has not been clarified so far. During visual stimulation with a random dot pattern, 45 (35%) neurons were found to be direction selective, 10 (8%) were axis selective (best neuronal responses to rotations in both directions around one particular stimulus axis), and 75 (58%) were movement sensitive. Direction-selective responses were found to the following stimulus directions (in retinal coordinates): temporonasal and nasot

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30

Nester, Christopher J., and Andrew H. Findlow. "Clinical and Experimental Models of the Midtarsal Joint." Journal of the American Podiatric Medical Association 96, no. 1 (2006): 24–31. http://dx.doi.org/10.7547/0960024.

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Recent debate and literature have provided impetus to the growing body of thought that we should not model the midtarsal joint as having two simultaneous axes of rotation but as having a single instantaneous axis of rotation. Building on this concept, we present new reference terminology and propose that descriptions of midtarsal joint kinetics and kinematics relate to moments and motion in the cardinal body planes as defined by the x-, y-, and z-axes of the local reference system of the calcaneus. This replaces the existing terminology that describes the oblique and longitudinal axes for the

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31

Hinrichs, Richard N. "Upper Extremity Function in Running. II: Angular Momentum Considerations." International Journal of Sport Biomechanics 3, no. 3 (1987): 242–63. http://dx.doi.org/10.1123/ijsb.3.3.242.

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Ten male recreational runners were filmed using three-dimensional cinematography while running on a treadmill at 3.8 m/s, 4.5 m/s, and 5.4 m/s. A 14-segment mathematical model was used to examine the contributions of the arms to the total-body angular momentum about three orthogonal axes passing through the body center of mass. The results showed that while the body possessed varying amounts of angular momentum about all three coordinate axes, the arms made a meaningful contribution to only the vertical component (Hz). The arms were found to generate an alternating positive and negative Hzpatt

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32

Murray, A. P., and J. M. McCarthy. "Burmester Lines of Spatial Five Position Synthesis from the Analysis of a 3-CPC Platform." Journal of Mechanical Design 121, no. 1 (1999): 45–49. http://dx.doi.org/10.1115/1.2829428.

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This paper presents a new technique for determining the fixed axis for a spatial CC chain that guides a rigid body through five finitely separated positions, termed a Burmester Line. It is known that there can be as many as six Burmester lines for a given set of five spatial positions. Here we show that these six lines can be obtained from the analysis of a 3-CPC platform, constructed from relative screw axes associated with the five specified displacements. The screw axes of the displacement of this platform to each of its assemblies are the desired Burmester lines. Roth’s original example is

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33

Oyamada, Keisuke, Musashi Ujita, Tomoko Imura, and Nobu Shirai. "Effects of Body Orientation Relative to Gravity on Vection in Children and Adults." i-Perception 11, no. 4 (2020): 204166952093958. http://dx.doi.org/10.1177/2041669520939585.

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We investigated the effects of the interaction between the body and gravitational axes on vection (visually induced self-motion perception) in school-age children and adults. Experiment 1 was a pilot study of adults that was conducted to determine the appropriate experimental settings for the main experiment that included children and adults. The adult participants experienced vection in four different directions in the head-centered coordinate (forward, backward, upward, and downward) under two postural conditions: standing (in which the body and gravitational axes were consistent) and supine

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34

Savard, Pierre. "Body axis determination during early development in amphibians." Biochemistry and Cell Biology 70, no. 10-11 (1992): 875–91. http://dx.doi.org/10.1139/o92-136.

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The specification of the main axes of the body is a phenomenon based on cell communication and is among the early crucial events of embryonic development. Upon fertilization, the amphibian egg reorganizes its cytoplasmic content, leading to the establishment of the future dorsal–ventral axis of the body. Heterogeneous distribution of maternal components confers cellular regionalization after only a few mitoses. Development up to the 4000-cell stage proceeds almost entirely on maternal materials, and during this period there is remodeling of the chromatin to set up specific gene expression in v

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35

Dell’Oro, A., J. Boccenti, F. Spoto, P. Paolicchi, and Z. Knežević. "The impact of physical processes on the estimation of the ages of asteroid families." Monthly Notices of the Royal Astronomical Society 506, no. 3 (2021): 4302–20. http://dx.doi.org/10.1093/mnras/stab1947.

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ABSTRACT One of the methods used to estimate the ages of the asteroid families is based on the interpretation of the distribution of the sizes versus orbital semimajor axes of their members as the result of their post-formation dynamical evolution. The fundamental hypothesis is that the present distribution of the semimajor axes is essentially the product of the Yarkovsky effect. On the other hand, the observable features of the asteroid families can be affected by several physical and dynamical processes. In this paper, we discuss the role of: (1) the initial distribution of the ejection velo

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36

Tuazon, Francesca B., and Mary C. Mullins. "Temporally coordinated signals progressively pattern the anteroposterior and dorsoventral body axes." Seminars in Cell & Developmental Biology 42 (June 2015): 118–33. http://dx.doi.org/10.1016/j.semcdb.2015.06.003.

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37

Ray, R. P., and T. Schupbach. "Intercellular signaling and the polarization of body axes during Drosophila oogenesis." Genes & Development 10, no. 14 (1996): 1711–23. http://dx.doi.org/10.1101/gad.10.14.1711.

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38

Sabbah, Shai, John A. Gemmer, Ananya Bhatia-Lin, et al. "A retinal code for motion along the gravitational and body axes." Nature 546, no. 7659 (2017): 492–97. http://dx.doi.org/10.1038/nature22818.

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39

Hashimoto, Teruo, and Atsushi Iriki. "Dissociations between the horizontal and dorsoventral axes in body‐size perception." European Journal of Neuroscience 37, no. 11 (2013): 1747–53. http://dx.doi.org/10.1111/ejn.12187.

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40

Hua, L., J. E. L. Bishop, and J. W. Tucker. "Micromagnetics of cubic particles with easy axes along the body diagonals." IEEE Transactions on Magnetics 30, no. 2 (1994): 760–62. http://dx.doi.org/10.1109/20.312400.

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41

Murray, A. P., and J. M. McCarthy. "Passing a Central Axis Congruence Through Six Arbitrary Lines in Space." Journal of Mechanical Design 118, no. 4 (1996): 515–19. http://dx.doi.org/10.1115/1.2826921.

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The design theory of a spatial 4C linkage to move a rigid body through four specified spatial positions determines a congruence of lines that may be used as fixed axes of the linkage, called the central axis congruence. In this paper, we locate a central axis congruence in space by identifying six arbitrary lines that it is to contain; we do not specify the positions of a rigid body or the associated relative displacement screws. We find that this yields at least one and as many as five different central axis congruences through a given set of six lines. Having defined the congruence without i

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42

Wauters, M., RV Considine, and LF Van Gaal. "Human leptin: from an adipocyte hormone to an endocrine mediator." European Journal of Endocrinology 143, no. 3 (2000): 293–311. http://dx.doi.org/10.1530/eje.0.1430293.

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Leptin is a mainly adipocyte-secreted protein that was discovered 5 years ago. Most of the research following this discovery focused on the role of leptin in body weight regulation, aiming to illuminate the pathophysiology of human obesity. However, more and more data are emerging that leptin is not only important in the regulation of food intake and energy balance, but that it also has a function as a metabolic and neuroendocrine hormone. It is now clear that it is especially involved in glucose metabolism, as well as in normal sexual maturation and reproduction. Besides this, interactions wi

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43

Israel, I., N. Chapuis, S. Glasauer, O. Charade, and A. Berthoz. "Estimation of passive horizontal linear whole-body displacement in humans." Journal of Neurophysiology 70, no. 3 (1993): 1270–73. http://dx.doi.org/10.1152/jn.1993.70.3.1270.

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1. Passive linear self-motion estimation along the X and Y axes was investigated in human subjects. 2. A target was viewed from a distance of 0.8 or 2.4 m from the starting point. Subjects were then blindfolded and transported toward the target on a distance of 3.2 m and back to the start. Acceleration was constant: +/- 0.2 or +/- 1 m/s2. The subjects pushed a button on both outward and return paths, when they passed the previously seen target. 3. The results showed anticipation of the target on the outward path, and not on the return. This was identical for both axes and both accelerations. 4

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Traunmüller, Claudia, Kerstin Gaisbachgrabner, Helmut Karl Lackner, and Andreas R. Schwerdtfeger. "Burnout of the Mind – Burnout of the Body?" Journal of Psychophysiology 32, no. 1 (2018): 30–42. http://dx.doi.org/10.1027/0269-8803/a000182.

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Abstract. In the present paper we investigate whether patients with a clinical diagnosis of burnout show physiological signs of burden across multiple physiological systems referred to as allostatic load (AL). Measures of the sympathetic-adrenergic-medullary (SAM) axis and the hypothalamic-pituitary-adrenal (HPA) axis were assessed. We examined patients who had been diagnosed with burnout by their physicians (n = 32) and were also identified as burnout patients based on their score in the Maslach Burnout Inventory-General Survey (MBI-GS) and compared them with a nonclinical control group (n =

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K. Bhiwapurkar, Mahesh, V. H. Saran, and Suraj P. Harsha. "Seat to Head Transmissibility during Exposure to Vertical Seat Vibration: Effects of Posture and Vibration Magnitude." March 24, No 1 (2019): 3–11. http://dx.doi.org/10.20855/ijav.2019.24.11108.

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The low frequency vibration transmitted to the body can affect the comfort, performance, and health of humans. In this paper, the effect of variations in posture and vibration magnitude on the head motion in three translational axes (fore-and-aft, lateral and vertical) has been studied with a vertical seat vibration. Thirty healthy male subjects were exposed to random vibration with three vibration magnitudes of 0.4, 0.8, and 1.2 m/s2 rms over the frequency range of 1–20 Hz. The results are analysed in terms of seat-to-head-transmissibility (STHT) for the head motions in two seated postures (b

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Hills, D. A., and A. Sackfield. "Sliding Contact Between Dissimilar Elastic Cylinders." Journal of Tribology 107, no. 4 (1985): 463–66. http://dx.doi.org/10.1115/1.3261109.

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The problem considered is contact between two dissimilar elastic cylinders, having their axes parallel and sliding in a direction normal to the axes. The traction distribution is determined, as are the resultant stresses generated in each body. It is found that the stresses well within the body are not changed greatly from a classical Hertz analysis, where coupling between the normal and shear tractions is neglected, but that there is a first order modification of surface tensile stresses.

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Tsiotras, P., and J. M. Longuski. "Analytic Solutions for a Spinning Rigid Body Subject to Time-Varying Body-Fixed Torques, Part II: Time-Varying Axial Torque." Journal of Applied Mechanics 60, no. 4 (1993): 976–81. http://dx.doi.org/10.1115/1.2901011.

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In this paper we extend the methodology developed in Part I in order to accommodate the case of an axial time-varying torque (in addition to the two transverse timevarying torques) acting on a rotating rigid body. The analytic solutions thus derived describe the general attitude motion of a near-symmetric rigid body subject to timevarying torques about all three body-fixed axes.

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Chu, Wang Wei, Shao Wei Zhu, Yu Peng, and Guo Fu Ding. "Geometric Error Identification and Compensation for Rotation Axes of Five-Axis Machine Tools." Advanced Materials Research 338 (September 2011): 786–91. http://dx.doi.org/10.4028/www.scientific.net/amr.338.786.

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In NC machining, the precision of the final parts is affected by many factors, including geometric deviation of machine tool components and structures, deformation of process system caused by cutting force and cutting heat, servo delay, tool wear and so on. Among which geometric error of machine tool is one of the most important factors. This study focused on geometric error identification and compensation of rotation axes of five-axis machine tools. A new method was proposed to identify the 6 geometric error parameters of each rotation axes of five-axis machine tools based on a ball-bar syste

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Ricardo, Bernard, and Zhe Wen Yuan. "Three-Axis Theorem in Moment of Inertia Computation." Physics Educator 02, no. 03 (2020): 2050012. http://dx.doi.org/10.1142/s2661339520500122.

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A very important property in the study of rigid body dynamics, moment of inertia describes the resistance of an object to any change in its angular velocity, given a certain amount of torque. Although many novel methods have been developed to simplify its calculation, this paper presents a remarkable theorem in moment of inertia that has never been widely used, the three-axis theorem. The theorem provides an alternative way for moment of inertia computation and better visualization in integrating each infinitesimal constituent mass element of a rigid body. The key idea is to focus on the dista

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Zhu, Yiming, Guowu Wei, Lei Ren, Zirong Luo, and Jianzhong Shang. "Gyroscope Sensor Based In Vivo Finger Axes of Rotation Identification Using Screw Displacement." Applied Bionics and Biomechanics 2021 (February 10, 2021): 1–10. http://dx.doi.org/10.1155/2021/8871593.

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This paper presents a low-cost, efficient, and portable in vivo method for identifying axes of rotation of the proximal interphalangeal and distal interphalangeal joints in an index finger. The approach is associated with the screw displacement representation of rigid body motion. Using the matrix exponential method, a detailed derivation of general spatial displacement of a rigid body in the form of screw displacement including the Rodrigues’ formulae for rotation is presented. Then, based on a gyroscope sensor, a test framework for determining axes of rotation of finger joints is established

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