a brain–computer interface bci , sometimes called a neural-control interface nci , mind-machine interface mmi , direct neural interface dni , or brain–machine interface b
the dynamic analysis of a machine requires the determination of the movement, or kinematics, of its component parts, known as kinematic analysis. the assumption that the system is an assembly of rigid components allows rotational and translational movement to be modeled mathematically as euclidean, or rigid, transformations .
in computational fluid dynamics quick, which stands for quadratic upstream interpolation for convective kinematics, is a higher-order differencing scheme that considers a three-point upstream weighted quadratic interpolation for the cell face values. in computational fluid dynamics there are many solution methods for solving the steady convection–diffusion equation.
kinematics is a subfield of classical mechanics that describes the motion of points, bodies objects , and systems of bodies groups of objects without considering the forces that cause them to move. kinematics, as a field of study, is often referred to as the 'geometry of motion' and is occasionally seen as a branch of mathematics.
the si unit of kinematic viscosity is square meter per second m 2 /s , whereas the cgs unit for kinematic viscosity is the stokes st, or cm 2 ·s −1 = 0.0001 m 2 ·s −1 , named after sir george gabriel stokes. in u.s. usage, stoke is sometimes used as the singular form.
this timeline shows the whole history of the universe, the earth, and mankind in one table. each row is defined in years ago, that is, years before the present date, with the earliest times at the top of the chart.in each table cell on the right, references to events or notable people are given, more or less in chronological order within the cell.
shallow water equations, in its non-linear form, is an obvious candidate for modelling turbulence in the atmosphere and oceans, i.e. geophysical turbulence. an advantage of this, over quasi-geostrophic equations , is that it allows solutions like gravity waves , while also conserving energy and potential vorticity .
in machining, boring is the process of enlarging a hole that has already been drilled by means of a single-point cutting tool, such as in boring a gun barrel or an engine cylinder. boring is used to achieve greater accuracy of the diameter of a hole, and can be used to cut a tapered hole. boring can be viewed as the internal-diameter counterpart to turning, which cuts external diameters. there are various types of boring. the boring bar may be supported on both ends, or it may be supported at on
a kinematic diagram or kinematic scheme illustrates the connectivity of links and joints of a mechanism or machine rather than the dimensions or shape of the parts. often links are presented as geometric objects, such as lines, triangles or squares, that support schematic versions of the joints of the mechanism or machine. a kinematic diagram is sometimes called a joint map or a skeleton diagram.
grazing animals that tend to eat hard, silica-rich grasses, have high-crowned teeth, which are capable of grinding tough plant tissues and do not wear down as quickly as low-crowned teeth. most carnivorous mammals have carnassialiforme teeth of varying length depending on diet , long canines and similar tooth replacement patterns.