Abstract: Apparatus for calculating current distribution inside brain includes: initial grid setting unit configured to set grid points constituting grid with predetermined pitch; current calculating unit configured to calculate current value at each grid point based on the electromagnetic information, by solving forward problem to obtain lead field matrix and by solving inverse problem to obtain current source vector; sub-grid setting unit configured to set grid points constituting sub-grid with smaller pitch, only for subset of the previously set grid, based on the current value at each grid point calculated in the preceding current calculating step; and calculation executing unit configured to repeat setting the sub-grid and calculating the current source vector by the sub-grid setting unit and the current calculating unit one or more times, after calculation of current source vector corresponding to the initial grid is executed by the initial grid setting unit and the current calculating unit.

Abstract: Apparatus for calculating current distribution inside brain includes: initial grid setting unit configured to set grid points constituting grid with predetermined pitch; current calculating unit configured to calculate current value at each grid point based on the electromagnetic information, by solving forward problem to obtain lead field matrix and by solving inverse problem to obtain current source vector; sub-grid setting unit configured to set grid points constituting sub-grid with smaller pitch, only for subset of the previously set grid, based on the current value at each grid point calculated in the preceding current calculating step; and calculation executing unit configured to repeat setting the sub-grid and calculating the current source vector by the sub-grid setting unit and the current calculating unit one or more times, after calculation of current source vector corresponding to the initial grid is executed by the initial grid setting unit and the current calculating unit.

Abstract: A power lawn mower of a mulching type with no opening for releasing mowed pieces sidewardly and having a housing with a short peripheral side wall with an inwardly protruding at a rear substantially half portion of a lower edge of the peripheral wall in the direction of forward movement of the lawn mower. The protruding portion temporarily retains mowed lawn pieces, or cuttings within the housing for chopping by a cutter rotatable in the housing. Chopped lawn pieces or cuttings are dropped through a lawn drop opening defined by the peripheral wall and deposited between blades of the cut lawn grass. The moved pieces are chopped to a moderate extent and dropped through the blades of the cut lawn grass to promote growth of the lawn grass.

Abstract: A paper feeder for a printer having a platen and a printing member disposed in confronting relation to the platen includes a pair of slide blocks which can be moved to vary the spacing therebetween dependent on the width of recording paper placed on the platen, each of the slide blocks supporting a track rotating body having a plurality of pins mounted on a peripheral surface thereof and spaced at prescribed intervals, a paper holder member confronting the track rotating body, and a drive roller. A drive shaft is disposed in each of the slide blocks for driving the track rotating body and the drive roller. A roller shaft supports thereon a pair of pinch rollers for contacting the drive rollers, respectively, and is movable away from the slide blocks, the pinch rollers being held by the paper holder members for slidable movement along the roller shaft in response to movement of the slide blocks.

Abstract: In a moving object, such as automobile, having a steering gear which determines a traveling course, and a traveling distance detector which detects a traveling distance; a direction detection apparatus comprising a steering position detector detecting an amount of displacement of the steering gear, and an arithmetic unit which calculates a traveling direction of the moving object from a steering position signal proportional to the amount of displacement and a traveling distance signal proportional to the traveling distance, thereby to detect the traveling direction of the moving object. The apparatus can detect the traveling direction without being affected by a magnetic deviation, an abnormal magnetic field, etc.

Abstract: A direction detection apparatus comprising a magnetic sensor which senses a geomagnetic azimuth, a turning-angle sensor which senses a turning angle dynamically, a magnetic-disturbance detector which detects a magnetic disturbance on the basis of the output of the magnetic sensor, and a signal switching device which transmits either the magnetic sensor output or the turning-angle sensor output to a display device in accordance with a signal from the magnetic-disturbance detector. The traveling direction of a moving object can be detected as a precise geographic azimuth even when the moving object lies in a place subject to the magnetic disturbance.

Abstract: A direction detection apparatus which detects the traveling direction of a moving object on the basis of the movement of a weight. It comprises a centrifugal force detector, a clock signal generator, and a velocity detector, and also a detection device which receives signals from the detectors and the generator to provide a directional angle.

Abstract: A composite switch assembly including in a cylindrical rotary knob, four contact mechanisms in which four quadrantal push buttons are combined and arrayed into a circular form and which are operated by the four push buttoms respectively, and two contact mechanisms which are operated by turning the rotary knob clockwise and counterclockwise respectively, thereby to permit a switch arrayal and a control configuration corresponding to the moving directions of a controlled object.