Results 111 to 120 of about 852,071 (368)

Kinematics Modeling and Analysis of Manipulator based on Dual Quaternion

open access: yesJixie chuandong, 2018
To simplify the kinematics expression and to increase the motion response speed for manipulators,a kinematics modeling method is proposed based on dual quaternion. First,to reduce the computational amount,the general equation of the forward kinematics of
葛为民   +3 more
doaj  

Dynamic Control of Virtual Hand Grasp Using Spatiotemporal Synergies

open access: yesIEEE Access, 2019
Recent advances in assistive hand devices have produced high degree of freedom systems which are capable of complex grasping, however user-friendly control of these sophisticated devices is still an open topic in research. Synergy-based controllers which
Martin K. Burns   +2 more
doaj   +1 more source

A Strong Tracking Mixed-Degree Cubature Kalman Filter Method and Its Application in a Quadruped Robot

open access: yesSensors, 2020
The motion state of a quadruped robot in operation changes constantly. Due to the drift caused by the accumulative error, the function of the inertial measurement unit (IMU) will be limited.
Jikai Liu   +5 more
doaj   +1 more source

Enhancing Damage Tolerance of Structures Using 3D/4D Printing Technologies

open access: yesAdvanced Materials Technologies, EarlyView.
This review highlights recent advances in damage tolerance for structural design, emphasizing safety, durability, and reliability in fields like aerospace and civil engineering. It covers innovations in materials, 3D/4D printing, predictive design methods, and nature‐inspired strategies.
Morteza Sayah Irani   +3 more
wiley   +1 more source

Kinematics Analysis of Working Devices of Wheel Loader based on Homogeneous Coordinate Transformation

open access: yesJixie chuandong, 2015
The kinematics equation of working devices is established by using the homogeneous coordinate transformation,and this is a new way for studying kinematics and dynamics of the working device of loader.Firstly,the kinematics equation of working devices is ...
臧红彬, 陶俊杰, 张辉
doaj  

Co-coding of head and whisker movements by both VPM and POm thalamic neurons

open access: yesNature Communications
Rodents continuously move their heads and whiskers in a coordinated manner while perceiving objects through whisker-touch. Studies in head-fixed rodents showed that the ventroposterior medial (VPM) and posterior medial (POm) thalamic nuclei code for ...
Tess Baker Oram   +4 more
doaj   +1 more source

The Effects of Accentuated Eccentric Loading on Mechanical Variables and Agonist Electromyography during the Bench Press

open access: yesSports, 2020
We compared the effects of accentuated eccentric loading (AEL) on mechanical variables and agonist muscle activation using low (30% 1-repetition maximum (1RM)) and high (80% 1RM) upward-phase loading with AEL (100% 1RM during downward phase) to ...
Alexis H. Castro   +2 more
doaj   +1 more source

Scaling of Hadronic Form Factors in Point Form Kinematics

open access: yes, 2003
The general features of baryon form factors calculated with point form kinematics are derived. With point form kinematics and spectator currents hadronic form factors are functions of $\eta:={1\over 4}(v_{out}-v_{in})^2$ and, over a range of $\eta ...
Amghar   +13 more
core   +1 more source

Hygromnemics: Programmable Material Memory Matter Actuators via Wet Pre‐Constraining

open access: yesAdvanced Materials Technologies, EarlyView.
Humidity‐based pre‐constraining creates hygromnemics‐shape memory matter. From identical biocomposites actuation in dry and wet states is obtained via hygromnemic and hygromorphic actuation, respectively. Hygromnemic actuators present long‐ and short‐term shape memory abilities.
Charles de Kergariou   +5 more
wiley   +1 more source

Error and anomaly detection for intra-participant time-series data

open access: yesInternational Biomechanics, 2017
Identification of errors or anomalous values, collectively considered outliers, assists in exploring data or through removing outliers improves statistical analysis.
David R. Mullineaux, Gareth Irwin
doaj   +1 more source

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