The ion mechanism for membrane potential of higher plant was discussed in this paper. A modified Hodgkin and Huxley model was developed for description of the electrical signals in plant. Three individual components of ionic current were formulated in terms of Hodgkin and Huxley model. It include potassium current IK, calcium current ICa, and anion current ICl-. It model will provide a useful t...

Rovers will continue to play an important role in planetary exploration. Plans include the use of the rocker-bogie rover configuration. Here, models of the mechanics of this configuration are presented. Methods for solving the inverse kinematics of the system and quasi-static force analysis are described. Also described is a simulation based on the models of the rover’s performance. Experimenta...

In this paper, the manipulability analysis of a new parallel-type rolling mill “Paramill” in its conceptual design stage is investigated. Paramill uses two Stewart platforms (SPs) in opposite direction for the generation of 6 degree-of-freedom motions of each work-roll. The objective of this new technology is to permit an integrated control of the strip thickness, strip shape, pair-crossing ang...

We explore robust methods of automatically quantifying constriction location, constriction degree and gestural kinematics of Italian short and long consonants using direct image analysis techniques applied to rtMRI data. Articulatory kinematics are estimated from correlated regional changes in pixel intensity. We demonstrate that these methods are capable of quantifying differences in constrict...

Analyzing the inverse kinematics theory and its solution method for 5R series manipulator, introducing the establishment of link coordinate system and D_H parameters for 5R series manipulator, studying the algorithm of inverse kinematics solutions based on FPGA controller for 5R manipulator, the system constructs the SOPC system architecture that is based on the Nios II CPU, uses the C program ...

This paper presents a novel method to solve the inverse kinematics of redundant manipulators with active Spherical ball joint. The workspace density function is built combining the Fourier transform, convolution theorem and particular form of the workspace density of a single link, which can accurately generate the size of workspace. The approach of inverse kinematics selects a solution from am...

The robot kinematic mapping x = f() generally has multiple distinct solution branches fjf() = x d g for a given end{eeector location x d , where each branch can have a nontrivial manifold structure (as in the case of a redundant manipulator). Learning techniques which exploit known topological properties of the mapping are used to determine the number and nature of these branches. Speciically, ...

We make use of following notations and definitions. Z+ is the set of all nonnegative integers; Z+ is the set of all multiindices α = (α1, . . . , αn); ‖α‖ = α1 + · · ·+ αn; 0 = (0, . . . , 0) ∈ Z+. The inequalities between the multiindices α = (α1 , . . . , αn) and β = (β1, . . . , βn) are understood componentwise. It will be assumed that m > 0. If for some multiindex α = (α1, . . . , αn) we ha...

Often people attempt to live their lives backwards; they try to have more things, or want more money, in order to do more of what they want, so they will be happier. The way it actually works is the reverse. You must first be who you really are, then do what you need to do, in order to have what you want.

1.1. Statement of the main result. The isoperimetric problem of euclidean type for a space X and given classes Ik−1, Ik, and Ik+1 of surfaces of dimension k − 1, k, and k + 1 in X , together with boundary operators Ik+1 ∂ −→ Ik ∂ −→ Ik−1 and a volume function M on each class, asks the following: Does there exist for every surface T ∈ Ik without boundary, ∂T = 0, a surface S ∈ Ik+1 with ∂S = T a...