10results about How to "Convenient teaching" patented technology

This invention discloses a multi-layered tooth with a carious pulp chamber and its fabrication method. The method involves sequentially molding a simulated dentin crown with an upper pulp chamber, a simulated enamel with a caries-receiving groove covering the outer side of the simulated dentin crown, and a simulated caries portion within the caries-receiving groove through multiple in-mold injection molding processes. A simulated dentin root with a lower pulp chamber and simulated root canals is then formed by injection molding or 3D printing. The inner walls of the upper and lower pulp chambers and the simulated root canals are coated with simulated pulp dye. The simulated pulp is then placed into the lower pulp chamber and the simulated root canal. The simulated crown is then fixed to the upper end of the simulated dentin root by bonding or welding to form the simulated tooth. This invention's simulated tooth has a caries-like structure and reproduces the anatomical morphology of a real tooth, which helps improve students' clinical experience during practical training. The highly realistic tooth model of this invention can be used to explain different course content, improving teachers' teaching efficiency.

The application belongs to the field of physical optical measurement, and particularly relates to a double-slit interference experiment device. The device comprises an optical platform, a first sheet element, a second sheet element, a first clamping groove, a second clamping groove and a micrometer. The first sheet element comprises spaced light-transmitting areas and non-light-transmitting areas. The second sheet element comprises spaced non-light-transmitting areas and light-transmitting areas. The two sheet elements are close to each other and are fixed on the first clamping groove and the second clamping groove respectively. The first clamping groove is fixed on the platform. The micrometer comprises a micrometer screw, a knob and a scale and is fixed on the platform. The end of the micrometer screw is connected with the end of the second clamping groove close to the fourth non-light-transmitting area. When the knob is rotated, the micrometer screw drives the second clamping groove to move along the axis of the micrometer screw. The light-transmitting areas and the non-light-transmitting areas of the two sheet elements are staggered to form a double slit. Compared with the prior art, the application has the advantages that the precise adjustment of the width of a single slit and the distance between double slits can be realized simultaneously, and the occurrence of the phenomenon of missing steps can be effectively avoided.

The utility model provides a kind of GYK maintenance teaching and practical training integration device, including operation platform and cabinet, and each set of locomotive signal machine is equipped in the both ends of operation platform top;Computer is equipped in operation platform top middle;There is a travelling crane computer and two sets of man-machine interactive system in the embedded mode on operation platform;There is large and small brake and controller on the tabletop of operation platform;Power supply plug-in box is equipped in cabinet top, GMS equipment is equipped in cabinet middle part, GYK host computer is equipped below GMS equipment, fault simulation plug-in box and signal simulation plug-in box are equipped below GYK host computer;Wiring terminal row is equipped in the back of cabinet;The connecting cable between each equipment all passes through wiring terminal row and fault simulation plug-in box;Computer and fault simulation plug-in box communication control wiring terminal row inside different cable signal carry out on-off, simulate common fault phenomenon.

The application provides a complementary embedding image encryption method based on an improved cross-coupled mapping lattice, which comprises the following steps: establishing an improved sine cross-coupled mapping lattice model; based on a plaintext image, generating a secret key by SHA-384 and an original image, and calculating model parameters and initial values according to the secret key; detecting the plaintext image, identifying and obtaining airport coordinates, randomly selecting a coordinate point, and obtaining a visual confusion image through a complementary embedding algorithm; iterating the established sine cross-coupled mapping lattice model to obtain a matrix, converting the matrix into a one-bit array, taking the last rxc data to obtain b; distributing an initial matrix and iterating to an appropriate size to obtain a fractal disorder matrix; selecting the first r rows and the first c columns to form a one-dimensional array, sorting the one-dimensional array to obtain an index array; performing synchronous dynamic scrambling and diffusion operations on three channels R, G and B in a color image respectively to obtain a sub-encrypted image corresponding to each channel. The sub-encrypted images are assembled into a final encrypted image C.

This invention discloses a remote online teaching method and system based on internet education, including a teaching server, a student terminal, and a teacher terminal. This remote online teaching system leverages the multi-channel transmission characteristics of the internet, dividing a single class into multiple learning groups. Each learning group shares a communication channel, allowing for multi-channel communication with the instructor. This effectively reduces communication congestion, resulting in more stable and efficient video transmission. Group members can communicate with each other, facilitating peer interaction. Instructors can individually enter each learning group during communication sessions to provide guidance. The system incorporates an evaluation unit, allowing for peer evaluation between instructors and students, monitoring and regulating student learning behavior. The system collects evaluations through multiple channels and at multiple levels, providing a comprehensive assessment that promotes better teacher-student communication and improves teaching quality.

A prefabricated building component curing kiln teaching device comprises a rack, door sets, fluency strips and a detection switch, the teaching device is provided with four curing positions, the curing positions are divided into an upper layer and a lower layer in the rack, each layer is provided with a left curing position and a right curing position, and an entrance and an exit of each curing position are correspondingly provided with the door sets capable of opening and closing the rack in an up-down sliding mode. Each maintenance station comprises a mold table, a fluent strip and a detection switch, the mold tables are used for placing building components, each mold table is supported by two parallel fluent strips installed in the rack and can enter and exit from the teaching device along the fluent strips, and the detection switches are used for detecting whether the mold tables are in place or not; the plane where the entrance of the maintenance position is located is the front of the rack.

The invention belongs to the field of simulation teaching devices, particularly relates to a simulation teaching device for financial management teaching, and aims to solve the problems that when an existing simulation teaching device is used, moving parts such as a simulation plate are not flexible enough in moving direction, can only move transversely or longitudinally and cannot meet different teaching requirements. The device comprises two supporting plates, the tops of the two supporting plates are fixedly provided with the same simulation platform, the top of the simulation platform is provided with a groove, a blackboard is fixedly installed in the groove, the top of the blackboard is provided with a plurality of simulation demonstration blocks, and the top of the simulation platform is fixedly provided with two supporting columns. The simulation demonstration block can move at will, is more flexible to use, facilitates teaching, has a protection function, can seal the groove in time after use, prevents impurities from entering, and can prevent dust of the monitoring display screen box and the monitoring camera.

This utility model relates to the field of experimental demonstration platform technology, and more specifically, to an intelligent experimental demonstration platform. It includes an experimental demonstration platform with a hollowed-out rear center, an experimental tabletop fixed to the upper end of the platform, and a slide rail tablet support module slidably connected to the experimental tabletop. The experimental tabletop and the slide rail tablet support module are electrically connected, enabling a tablet computer placed on the slide rail tablet support module to perform charging. An experimental imaging module is detachably connected to the front of the experimental tabletop. The slide rail tablet support module includes a tablet support tilted and fixed to a slide base. A horizontal electric slide rail is installed on the rear side of the experimental tabletop, and a rib is fixed to the rear side of the slide base and slidably connected within the horizontal electric slide rail. A conductive sheet is installed on the rib. The advantages are that it is an intelligent experimental demonstration platform that allows for flexible adjustment of the experimental imaging module position, horizontal sliding adjustment of the support position, and tablet charging functionality.

This invention provides a device and method for simulating the berthing and mooring of large ship models at docks, including a cam, a steering slider assembly, and a linear spring. One side of the steering slider assembly is connected to a push rod that can move up and down under the rotation of the cam. The end of the push rod away from the steering slider assembly contacts the circumferential side of the cam, and the side of the steering slider assembly away from the push rod is connected to the linear spring. This invention has the following advantages: Based on different radii and curve slopes of the cam, three marker points are set on the surface of the cam. When the cam is driven to rotate between these points, the complex nonlinear changes of the fender can be simulated. Therefore, this invention utilizes the stroke of the cam so that the deformation of only one spring can simulate the complex nonlinear changes of the fender, thereby solving the problem that the curve in the compression range of 35% to 75% cannot be simulated in the prior art.

This invention discloses a design method for an all-steel radial railway tire. The tire has a centrally symmetrical cross-section and includes an external contour structure, an internal contour structure, and the thickness of key components. The method includes the following steps: S1: Determine the tire's outer diameter and end face width, and calculate the tire's section height based on the outer diameter; S2: Design the external contour structure, which includes the crown contour line, shoulder contour line, sidewall contour line, and bead contour line; S3: Design the thickness of key components, which include the crown, shoulder, sidewall, and bead; S4: Design the internal contour structure, which includes the inner contour arc of the crown, shoulder, sidewall, and bead. After determining the tire's outer diameter and section width, the remaining parameters can be automatically calculated using coefficients. The entire process is not only time-efficient but also reduces the requirements for designers.