Results 31 to 40 of about 213,216 (285)
Aluthge transforms of 2-variable weighted shifts [PDF]
, 2017 We introduce two natural notions of multivariable Aluthge transforms (toral and spherical), and study their basic properties. In the case of 2-variable weighted shifts, we first prove that the toral Aluthge transform does not preserve (joint ...
Curto, Raul E., Yoon, Jasang
core +3 more sources
Kinematic Analysis of a Serial-Parallel Hybrid Mechanism and its Application to a Wheel-Legged Robot
IEEE Access, 2020 A three-DOF (degree-of-freedom) serial-parallel hybrid mechanism is proposed that consists of a 2-UPS+U component (UPS: universal-/prismatic-/spherical-joint chain and U: universal joint) and an R+RPS component (R: revolute joint and RPS: revolute ...
Jianye Niu +6 more
doaj +1 more source
Solving the double-banana rigidity problem: a loop-based approach [PDF]
Mechanical Sciences, 2016 Rigidity detection is an important tool for structural synthesis of mechanisms, as it helps to unveil possible sources of inconsistency in Grübler's count of degrees of freedom (DOFs) and thus to generate consistent kinematical models of complex ...
F. Simroth, H. Ding, A. Kecskeméthy
doaj +1 more source
Mathematical model and manufacturing of a human or a robotic knee joint
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2017 This paper proposed two imaginary planar rack-cutters to create a spherical gear pair with ring-involute teeth. The spherical gear pair can be used to a knee joint mechanism. The imaginary planar rack cutter consists of two kinds of conical tooth. One is
Hsueh-Cheng YANG, Chia-Hung LAI
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IEEE Access, 2019 Recently, a modeling method for head-related transfer functions (HRTFs) in the spatial domain is proposed based on spherical wavelets. Because spherical wavelets are local functions on the sphere, HRTF local features can be efficiently represented by ...
Huaping Liu, Yong Fang, Qinghua Huang
doaj +1 more source
Shoulder and hip joint for hard space suits [PDF]
, 1986 Shoulder and hip joints for hard space suits are disclosed which are comprised of three serially connected truncated spherical sections, the ends of which converge. Ball bearings between the sections permit relative rotation.
Vykukal, H. C.
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Support Vector Machines for Anatomical Joint Constraint Modelling [PDF]
, 2009 The accurate simulation of anatomical joint models is becoming increasingly important for both realistic animation and diagnostic medical applications. Recent models have exploited unit quaternions to eliminate singularities when modeling orientations ...
Dacey, Michael, Jenkins, Glenn
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Bone tumours present significant challenges for affected patients, as multimodal therapy often leads to prolonged physical limitations. This is particularly critical during childhood and adolescence, as it can negatively impact physiological development and psychosocial resilience.
Jennifer Queisser +5 more
wiley +1 more source
A scalable joint-space controller for musculoskeletal robots with spherical joints [PDF]
2011 IEEE International Conference on Robotics and Biomimetics, 2011 In the long history of robotics research, the most prominent problem has always been, to develop robots that can safely operate in human-centered environments. One way towards the goal of a safe, and human-friendly robot, is to incorporate more and more of the flexibility that can be found in humans, by mimicking the internal mechanisms.
Michael Jantsch +4 more
openaire +3 more sources
FEBS Letters, EarlyView.Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho +3 more
wiley +1 more source