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542 results about "Size determination" patented technology

Sample size determination. Sample size determination is the act of choosing the number of observations or replicates to include in a statistical sample. The sample size is an important feature of any empirical study in which the goal is to make inferences about a population from a sample.

System and method for filling level determination

A method for determining a filling level of a product contained in a tank, by means of a radar level gauge system comprising a transceiver for generating, transmitting and receiving electromagnetic signals; a probe connected to the transceiver and arranged to guide a transmitted electromagnetic signal from the transceiver towards and into the product inside the tank, and to return a reflected electromagnetic signal resulting from reflection of the transmitted electromagnetic signal by a surface of the product back towards the transceiver; and a plurality of reference reflectors each being arranged at a respective known position along the probe and being configured to reflect a portion of the transmitted electromagnetic signal back towards the transceiver. The method comprises the steps of identifying, based on received electromagnetic signals reflected by the reference reflectors, a set of reference reflectors located above the surface of the product; selecting first and second reference reflectors comprised in the set of reference reflectors; determining a propagation velocity compensation factor based on a known distance between the first and second reference reflectors and a distance therebetween determined using received electromagnetic signals reflected by the first and second reference reflector, respectively; and determining the filling level based on a received electromagnetic signal reflected by the surface of the product, and the propagation velocity compensation factor.
Owner:ROSEMOUNT TANK RADAR

Method for manufacturing direct shear test structural plane model

The invention relates to a method for manufacturing a direct shear test structural plane model. The method comprises the following steps of: (1) the selection and the processing of a virgin rock structural plane: selecting a virgin rock structural plane to be used as a sample, and leveling an original structural plane of the rock mass; then coating a mould release agent at a selected position determined according to the specific size of a structural plane model, and spreading an isolating membrane; (2) putting a lower mould on the selected position of the original structural plane, and pouring a uniformly stirred mixed material into the lower mould; after carrying out water retention maintenance on the sample, turning over a lower disk structural plane sample together with the lower mould, and removing the used isolating membrane on the lower disk structural plane; (3) coating the mould release agent on the prepared lower disk structural plane, and spreading the isolating membrane; centering and putting an upper mould on a lower mould, and then pouring a uniformly stirred mixed material of weighed raw materials into the upper mould again; and (4) demoulding. The method has specific principle, strong maneuverability, low cost and good use effect.
Owner:GUANGZHOU FULI CONSTR & INSTALLATION ENG

Visual Simulator for Spectacle Lens, Visual Simulation Method for Spectacle Lens, and Computer Readable Visual Simulation Program for Spectacle Lens

A visual simulator for a spectacle lens including: a lens design data acquirer that acquires lens design data on design items of a spectacle lens including a prescription for a spectacle wearer's naked eye; a lens designer that designs the spectacle lens based on the lens design data; an original image data acquirer that acquires an original image data for the simulation; an image processor that processes the original image data acquired by the original image data acquirer and generates image data representing an image viewed through a lens processed based on the frame data; a display that comprises a screen that displays the image based on the image data generated by the image processor; a partial enlargement information acquirer that acquires partial enlargement information of a visual field, the partial enlargement information including a distance from a spectacle lens wearer to the screen of the display and a dimension of the screen, wherein a processing mode of the image processor includes: an entire display mode in which the visual field based on the shape data is entirely displayed on the screen of the display; and a partial display mode in which a part of the visual field determined by the distance from the spectacle wearer to the screen of the display and the dimension of the screen acquired by the partial enlargement information acquirer.
Owner:HOYA LENS MFG PHILIPPINES +1

Arrangement for determining the incidence angle of radiation and especially solar radiation

A device for determining the angle of incidence (alpha) of incident radiation and particularly sunlight (S) includes an array of light sensitive elements (10, 11 and 12) and a shadow mask (15) arranged above the elements. The shadow mask (15) includes a transparent region (14) and a non-transparent region (13) with a linear boundary or edge (16) therebetween. The linear edge (16) is arranged above the center of the linear array (9) of light sensitive elements (10, 11 and 12) so as to extend at a right angle relative to the linear direction of the array. To determine the angle of incidence (alpha), a coarse determination of the number of completely shaded light sensitive elements (10), and a fine determination of the fractional shading portion of the partially shaded light sensitive element (11) immediately adjacent to the completely shaded elements, are carried out. In this manner, a very high precision and accuracy can be achieved, exceeding the physical resolution determined by the size of the individual light sensitive elements, while still maintaining a simple and reliable construction. The angles of incidence (alpha) and (beta) in two perpendicular planes can be determined by providing a two-dimensional array of light sensitive elements in connection with a shadow mask having a two-dimensional checkerboard pattern of transparent regions and non-transparent regions.
Owner:DAIMLER AG
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