Abstract: The present disclosure relates to an in-plane two-dimensional translational optical actuator. The in-plane two-dimensional translational optical actuator includes a fixed plate, a translational plate, i elastic assemblies located between the fixed plate and the translational plate and with two ends connected to the fixed plate and the translational plate respectively, and j electromagnetic drive assemblies fixed between the fixed plate and the translational plate. Each elastic assembly is composed of elastic elements of the same or different quantities, and at least one elastic assembly in the i elastic assemblies has two or more elastic elements. The j electromagnetic drive assemblies are disposed in a plane in two different directions, and used to drive the translational plate to move relative to the fixed plate within a plane where the translational plate is located in two different directions, so as to achieve two-dimensional translation of the translational plate.

Abstract: A sound barrier system for reducing electric field distortion includes a wall unit and a sound barrier unit. The sound barrier unit includes a sound barrier plate that, from top to bottom, includes an arc-shaped part, an inclined part, and a vertical part that are integrally formed, wherein a center of a circle of the arc-shaped part points towards an interior of a power facility, the inclined part is tilted away from the power facility from top to bottom and is tangent to the arc-shaped part, and a lower end of the vertical part is arranged on a top of the wall unit. The sound barrier system further includes an energy supply pipeline, a security device, and an online monitoring device. The sound barrier system can be easily manufactured, and not only can improve an acoustic environment around a substation, but also can reduce an amplitude of an electric field.

Abstract: A soundproof door system includes a chute; a door body, where a bottom of the door body is inserted into the chute and able to slide along the chute; a first roller disposed on the bottom of the door body and supported on a bottom wall of the chute; a first soundproof plate provided with a first end connected to the door body and a second end abutting against an inner wall of the chute; a second soundproof plate provided with a third end connected to the door body and a fourth end abutting against the inner wall of the chute; and the first end and the third end are respectively located on two sides of the door body, and the second end and the fourth end are respectively located on both sides of the door body.

Abstract: The present disclosure provides a method for determining a recommended video, a data processing computer server and a system. The computer server determines candidate virtual scenes, users currently participating in the candidate virtual scenes, and a user corresponding to a virtual role in the candidate virtual scenes. After selecting a target virtual scene from the candidate virtual scenes, the computer server determines representation data of virtual roles of the target virtual scene, selects a target virtual role from the virtual roles of the target virtual scene according to the representation data of the virtual roles of the target virtual scene, and generates a recommended video at a viewing angle of the target virtual role in the target virtual scene.

Abstract: A method, an apparatus, a device, and a storage medium for displaying an equipment in a virtual environment battle. The method includes displaying a first battle interface of the virtual environment battle including a main equipment slot, an auxiliary equipment slot, and an expansion control interface in a first partial region of the first battle interface, the main equipment slot for displaying a main equipment of the virtual character, and the auxiliary equipment slot for displaying a first auxiliary equipment of the virtual character; receiving a first trigger signal on the expansion control interface, and displaying a second battle interface of the virtual environment battle including the main equipment slot, the auxiliary equipment slot, and an expansion equipment slot in a second partial region of the second battle interface, the expansion equipment slot for displaying a second auxiliary equipment owned by the virtual character other than the first auxiliary equipment.

Abstract: The present disclosure provides a method for determining a recommended video, a data processing computer server and a system. The computer server determines candidate virtual scenes, users currently participating in the candidate virtual scenes, and a user corresponding to a virtual role in the candidate virtual scenes. After selecting a target virtual scene from the candidate virtual scenes, the computer server determines representation data of virtual roles of the target virtual scene, selects a target virtual role from the virtual roles of the target virtual scene according to the representation data of the virtual roles of the target virtual scene, and generates a recommended video at a viewing angle of the target virtual role in the target virtual scene.

Abstract: A method for measuring mechanical parameters of a multilayer composite thin film structure and belongs to the technical field of online tests of micro-electro-mechanical system (MEMS for short) material parameters. Equivalent Young modulus and equivalent residual stress of each layer of the multilayer composite thin film structure can be obtained in one step by means of solving an equation set on the basis of a relationship between first-order resonance frequency of multilayer composite fixed-fixed beams and multilayer composite cantilever beams and parameters such as material characteristics and structure size, the online test of multilayer thin film materials can be realized, the test structure and calculating method are simple, and the accuracy is higher. The present invention further discloses a device for measuring mechanical parameters of the multilayer composite thin film structure.

Abstract: The present disclosure provides a method for determining a recommended video, a data processing computer server and a system. The computer server determines candidate virtual scenes, users currently participating in the candidate virtual scenes, and a user corresponding to a virtual role in the candidate virtual scenes. After selecting a target virtual scene from the candidate virtual scenes, the computer server determines representation data of virtual roles of the target virtual scene, selects a target virtual role from the virtual roles of the target virtual scene according to the representation data of the virtual roles of the target virtual scene, and generates a recommended video at a viewing angle of the target virtual role in the target virtual scene.

Abstract: A method, an apparatus, a device, and a storage medium for displaying an equipment in a virtual environment battle. The method includes displaying a first battle interface of the virtual environment battle including a main equipment slot, an auxiliary equipment slot, and an expansion control interface in a first partial region of the first battle interface, the main equipment slot for displaying a main equipment of the virtual character, and the auxiliary equipment slot for displaying a first auxiliary equipment of the virtual character; receiving a first trigger signal on the expansion control interface, and displaying a second battle interface of the virtual environment battle including the main equipment slot, the auxiliary equipment slot, and an expansion equipment slot in a second partial region of the second battle interface, the expansion equipment slot for displaying a second auxiliary equipment owned by the virtual character other than the first auxiliary equipment.

Abstract: Provided are a signal transforming method and a signal transforming device. For example, the signal transforming method includes determining a minimum-value matrix and a maximum-value matrix with respect to elements of a matrix used in frequency transformation, wherein the minimum-value matrix is configured of elements of minimum value and the maximum-value matrix is configured of elements of maximum value; determining a maximum threshold value of a result value of a function indicating at least one selected from transform distortion, normalization, and orthogonality of the matrix; determining a transform matrix configured of elements that are greater than the elements of the minimum-value matrix and less than the elements of the maximum-value matrix at respective positions of the matrix, and in which the result value of the function is less than the maximum threshold value; and transforming an input signal by using the determined transform matrix.

Abstract: A 3D bio-printer capable of detecting cell activity is provided. The 3D bio-printer includes an upper PC and a lower 3D printer. A conveying hose is connected to a printhead base of the printer, and a temperature controller is connected to the conveying hose. A printhead controller is connected to the other end of the conveying hose, a printhead is connected to the bottom of the printhead controller, and a main control cabinet controls the printhead to work via a signal generator. A prototyping table is provided under the printhead and is connected with a cell activity detecting device for detecting activity of a printed product. Cell activity can be detected in the process of printing, which ensures that the printed biological tissues maintain biological activity. It can supply multi-biological raw materials and realize multi-biological material printing, which ensures an environment suitable for biological material printing.

Abstract: A 3D bio-printer capable of detecting cell activity is provided. The 3D bio-printer includes an upper PC and a lower 3D printer. A conveying hose is connected to a printhead base of the printer, and a temperature controller is connected to the conveying hose. A printhead controller is connected to the other end of the conveying hose, a printhead is connected to the bottom of the printhead controller, and a main control cabinet controls the printhead to work via a signal generator. A prototyping table is provided under the printhead and is connected with a cell activity detecting device for detecting activity of a printed product. Cell activity can be detected in the process of printing, which ensures that the printed biological tissues maintain biological activity. It can supply multi-biological raw materials and realize multi-biological material printing, which ensures an environment suitable for biological material printing.

Abstract: A method for measuring mechanical parameters of a multilayer composite thin film structure and belongs to the technical field of online tests of micro-electro-mechanical system (MEMS for short) material parameters. Equivalent Young modulus and equivalent residual stress of each layer of the multilayer composite thin film structure can be obtained in one step by means of solving an equation set on the basis of a relationship between first-order resonance frequency of multilayer composite fixed-fixed beams and multilayer composite cantilever beams and parameters such as material characteristics and structure size, the online test of multilayer thin film materials can be realized, the test structure and calculating method are simple, and the accuracy is higher. The present invention further discloses a device for measuring mechanical parameters of the multilayer composite thin film structure.

Abstract: The present disclosure provides a method for determining a recommended video, a data processing computer server and a system. The computer server determines candidate virtual scenes, users currently participating in the candidate virtual scenes, and a user corresponding to a virtual role in the candidate virtual scenes. After selecting a target virtual scene from the candidate virtual scenes, the computer server determines representation data of virtual roles of the target virtual scene, selects a target virtual role from the virtual roles of the target virtual scene according to the representation data of the virtual roles of the target virtual scene, and generates a recommended video at a viewing angle of the target virtual role in the target virtual scene.

Abstract: Provided are a signal transforming method and a signal transforming device. For example, the signal transforming method includes determining a minimum-value matrix and a maximum-value matrix with respect to elements of a matrix used in frequency transformation, wherein the minimum-value matrix is configured of elements of minimum value and the maximum-value matrix is configured of elements of maximum value; determining a maximum threshold value of a result value of a function indicating at least one selected from transform distortion, normalization, and orthogonality of the matrix; determining a transform matrix configured of elements that are greater than the elements of the minimum-value matrix and less than the elements of the maximum-value matrix at respective positions of the matrix, and in which the result value of the function is less than the maximum threshold value; and transforming an input signal by using the determined transform matrix.

Abstract: Provided are a signal transforming method and a signal transforming device. For example, the signal transforming method includes determining a minimum-value matrix and a maximum-value matrix with respect to elements of a matrix used in frequency transformation, wherein the minimum-value matrix is configured of elements of minimum value and the maximum-value matrix is configured of elements of maximum value; determining a maximum threshold value of a result value of a function indicating at least one selected from transform distortion, normalization, and orthogonality of the matrix; determining a transform matrix configured of elements that are greater than the elements of the minimum-value matrix and less than the elements of the maximum-value matrix at respective positions of the matrix, and in which the result value of the function is less than the maximum threshold value; and transforming an input signal by using the determined transform matrix.

Abstract: An auto-accelerated method is applied to a mobile communication equipment. The mobile communication equipment includes a primary module and a secondary module with a specific communication pattern including a transmission interface. The primary module sends out an inquiry command to inquire the transmission interface corresponding to the secondary module. The secondary module sends out a reply command to answer the inquiry command. According to the reply command, the primary module turns a switch inside the primary module to reach a transmission unit corresponding to the transmission interface of the secondary module. After the switching, the data transmission is made through between the primary module and the secondary module.