6results about How to "Solve correlation problems" patented technology

This application provides a housing assembly and an electronic device. The housing assembly includes a housing body, at least partially comprising a light-transmitting area. This light-transmitting area overlaps at least with the orthographic projection of an optical module of the electronic device in the direction of the mid-frame. The optical module includes an emitting optical module and / or an incident optical module. The light-transmitting area allows light emitted by the emitting optical module to pass through, and / or allows light to pass through the housing body and be received by the incident optical module. The light-transmitting area includes a first surface disposed opposite to the electronic device body and a second surface disposed adjacent to the electronic device body. A protective layer is disposed on the first surface, corresponding at least to the optical module, and the Mohs hardness of the protective layer is greater than that of the housing body. Therefore, the housing body of the housing assembly adopts a transparent design, and by providing a protective layer on the outer surface of the light-transmitting area corresponding to the optical module, the problem of easy scratching and abrasion on the housing body is solved.

The invention belongs to the technical field of computers, and relates to an angle resolving system based on a CORDIC instruction. The system comprises an IFU instruction fetching unit and an EXU execution unit. The IFU instruction fetching unit reads the CORDIC instruction in the instruction memory according to the address of the PC in the instruction fetching stage; the EXU execution unit comprises a decoding module, an arithmetic logic unit, a loading storage unit and a write-back unit. According to the method, a CORDIC angle solution instruction set is expanded based on an RISC-V architecture, a complete assembly line hardware structure is designed, and trigonometric function operation is supported; a complete CORDIC operation path hardware circuit structure is provided, different operation processes multiplex the same operation path, and the utilization rate of hardware resources is increased; the limitation of calculation result range convergence during angle calculation based on a CORDIC algorithm is overcome, the calculation time is shortened by pre-storing a special angle result, and the circuit working frequency is optimized.

The present invention belongs to the technical field of fastening devices, and in particular refers to an integral expansion bolt suitable for fastening to a wall or similar parts such as furniture board connections. Its characteristics are that the transmission rod portion is sleeved with a screw sleeve integrally arranged with the expansion tube, the inner diameter of the screw sleeve is not less than the outer diameter of the entire screw, the inner hole of the end of the screw sleeve is sleeved with a shaft sleeve and axially fixedly matched therewith, and the inner diameter of the shaft sleeve or / and the screw sleeve after combination is not less than the outer diameter of the transmission rod portion and less than the outer diameter of the expansion rod portion. The above invention solves the problem of the integrity of the bolt and the expansion tube, and at the same time, the integral arrangement of the expansion tube and the screw sleeve improves the overall strength of the expansion bolt, and the arrangement of the integral screw sleeve ensures the positioning of the bolt, so that the integral expansion bolt has the advantages of convenient use and disassembly, firm connection, accurate positioning, and good reliability.

The invention provides a passenger loyalty influence mechanism analysis method based on a cumulative local total effect graph. The method comprises the following steps: collecting multi-dimensional public transport service element quality and passenger loyalty data; verifying the reliability and validity of the data, and researching the correlation between the quality attributes of the public transport service elements; preprocessing the data, constructing a causal analysis model between the public transport service element quality and the passenger loyalty, and training the model by using the data; an accumulated local total effect analysis method is used to deeply discuss the influence of the service quality of each dimension element in the public transport service on the loyalty of passengers. The method is applied to deep analysis of the passenger loyalty influence mechanism, can be independent of the used influence mechanism analysis model, and explores and objectively reveals the essential relationship between the perception service quality of public transport service elements and the passenger loyalty; and a firmer scientific basis is provided for formulating a public transport service quality optimization strategy.

This disclosure relates to the field of oil and gas geology, and particularly to a method, apparatus, equipment, medium, and procedure for analyzing the dissection process of oil and gas reservoirs. The method includes: selecting a target oil and gas reservoir based on the distribution characteristics of a predetermined target stratigraphic level; performing dissection analysis on the target oil and gas reservoir to obtain a dissection dataset; determining a data extraction method for each dissection data point based on its corresponding dissection category; extracting dissection attributes for each dissection data point using the data extraction method; analyzing each dissection data point based on the dissection attributes and pre-acquired dissection attribute data standards to obtain a dissection evaluation for each dissection data point; determining the complete dissection process corresponding to the target oil and gas reservoir using the dissection dataset; and comprehensively analyzing the complete dissection process using the dissection evaluation of each dissection data point. This invention can improve the accuracy of oil and gas reservoir process analysis.

The invention belongs to the technical field of organic synthesis, and particularly relates to a quaternary carbon type chiral allyl gem-silicon-boron compound as well as a synthesis method and application thereof, the structural formula of the quaternary carbon type chiral allyl gem-silicon-boron compound is # imgabs0 #, and the quaternary carbon type chiral allyl gem-silicon-boron compound can be used as a novel allyl bimetallic reagent to be subjected to an allyl boronation reaction to obtain the quaternary carbon type chiral allyl gem-silicon-boron compound. An E-anti homoallylic alcohol structural framework is obtained through complete double-bond selectivity and excellent diastereoselectivity, and compared with an existing synthesis method of a trisubstituted olefin-containing homoallylic alcohol structural building block, the method has the advantages of simple steps, high synthesis efficiency, wide application range and remarkable stereochemical control advantage; the building block has a wide application prospect for natural products or drug intermediates with the building block with the structure. When the quaternary carbon type chiral allyl gem-silicon boron compound is applied to allyl boronation reaction, the quaternary carbon type chiral allyl gem-silicon boron compound has the advantages of high synthesis efficiency, wide substrate applicability, excellent selectivity, high yield and low synthesis cost.