Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Zhen-Lei Zhou"'
Publikováno v:
PLoS ONE, Vol 8, Iss 7, p e68058 (2013)
Microsatellite instability (MSI) has been found in a range of human tumors, and little is known of the links between MSI and herpesvirus. In order to investigate the relationship between MSI and Gallid herpesvirus 2 (GaHV-2)-induced lymphoma, fifteen
Externí odkaz:
https://doaj.org/article/f4ffe03cd3494bcb96b92991aaed209a
Autor:
Charles C. Nguyen, Zhen-Lei Zhou
Publikováno v:
Journal of Intelligent and Robotic Systems. 19:105-117
The off-line global trajectory planning for kinematically redundant manipulators is formulated as an optimization problem whose solution is obtained by applying the Pontryagin’s Maximum Principle. The state space augmentation method is developed to
Publikováno v:
Journal of Robotic Systems. 12:871-881
Due to the reliance upon manual operations, conventional loading of munitions on tactical arcraft has several deficiencies including inefficient manpower and time utilization; accident potential; exposure of crew members to chemical, biological, and
N-acetyl-cysteine protects chicken growth plate chondrocytes from T-2 toxin-induced oxidative stress
Publikováno v:
Journal of applied toxicology : JAT. 32(12)
T-2 toxin is now considered to be related to bone malformation such as incomplete ossification, absence of bones and fused bones. In this study, primary cultures of chicken tibial growth plate chondrocytes (GPCs) were treated with various concentrati
Publikováno v:
Journal of Robotic Systems. 10:657-687
A joint-space adaptive control scheme for controlling noncompliant motion of a Stewart platform-based manipulator (SPBM) was implemented in the Hardware Real-Time Emulator at Goddard Space Flight Center. The six-degrees of freedom SPBM uses two platf
Publikováno v:
Robotics and Computer-Integrated Manufacturing. 9:159-167
In this paper, a Cartesian-space control scheme is developed to control the motion of kinematically redundant manipulators having 7 degrees of freedom (DOF) or more. The control scheme is composed of proportional-derivative (PD) controllers whose gai
Publikováno v:
Computers & Electrical Engineering. 17:147-161
To study space applications of telerobotics, Goddard Space Flight Center (NASA) has recently built a testbed composed mainly of a pair of redundant slave arms having 7 degrees-of-freedom and a master hand controller system. This paper presents the ma
Publikováno v:
Computers & Electrical Engineering. 17:191-203
In this paper, we present the kinematic analysis and implementation of a 6 DOF robotic wrist which is mounted to a general open-kinematic chain manipulator to serve as a testbed for studying precision robotic assembly in space. The wrist design is ba
Publikováno v:
ICRA
The authors present solutions for the forward and inverse kinematics of a 6-DOF Stewart Platform-based robot manipulator and develop a trajectory planning scheme for tracking the robot manipulator straight-line motion. A force/torque transformation i
Publikováno v:
IEEE Proceedings of the SOUTHEASTCON '91.
The authors consider the problem of efficient computation of the forward kinematics of a six-degree-of-freedom robot manipulator built to study autonomous assembly of parts in space. The manipulator, based on the Stewart platform mechanism, consists