523results about How to "Accurate data support" patented technology

The invention discloses a screw rd drilling tool rotor cladding layer friction test device and a screw rod drilling tool rotor cladding layer friction test method. The device comprises a rack, a box, a grinding wheel assembly, a linear rail assembly, a rectilinear motion assembly, a pressurizing assembly, a speed reducing machine with a motor, and a rectilinear motion assembly driving mechanism. Mud liquid is added in the box; a main shaft of the grinding wheel assembly penetrates through the box; a plurality of grinding wheels are fixedly arranged on the main shaft; at least lower parts of the grinding wheels are positioned in the box; two linear rails of the linear rail assembly are fixed at two sides of the box and are vertical to the main shaft; a base part of the rectilinear motion assembly runs on the linear rails; a pressing block limiting device is arranged on the base part; pressing blocks in the pressurizing assembly are arranged in pressing block installation holes in the pressing block limiting device; the bottom surface of each pressing block clamps a test piece; each pressing block is loaded by a lever mechanism and a pressure applying roller; the speed reducing machine drives the main shaft to rotate by a belt transmission mechanism; the main shaft rotates to drive the rectilinear motion assembly to run by a cam mechanism and a connection rod. Test data are relatively desirable, so that a relatively accurate data support is provided for study on a wear-resisting property of a cladding layer.

The invention discloses a method and a system for measuring web advertising effectiveness based on a multiple-contact attribution model, and pertains to the field of the network technology. The method comprises the following steps: collecting user access information and purchase transformation information of a website to be monitored, and uploading the information to the server side; performing data cleaning on the access information and the purchase transformation information on a server to obtain contact data and transformation data; calculating contact contribution value data by using the attribution model based on the transformation data and the contact data; and importing the contribution value serving as fundamental metrics and contact information serving as dimensionalities into an OLAP on-line analytical processing database, and aggregating data by using the OLAP to create a multi-dimensional data warehouse. The system comprises an information collection unit, a data cleaning unit, a contribution value acquisition unit and a data warehouse creation unit. The method and the system can help an advertiser to understand actual web advertising effectiveness from a number of perspectives, thereby accurately measuring underestimated or overestimated channel value in conventional methods, and providing the most accurate data support for optimizing web advertising and improving rate of return on investment.