Abstract: Provided is a method of generating a personalized learning path based on multi-course knowledge graph merging and a system thereof, in particular to the technical field of personalized learning path generation. The method includes: constructing a personalized knowledge base to obtain a personalized knowledge graph of all courses that students need to learn in the current academic year; using an entity alignment technology to realize the personalized knowledge graph merging of all courses, and automatically generating a personalized knowledge graph of multi-course merging; generating a subsequent learning path according to a current learning progress of users and the personalized knowledge graph of multi-course merging; and evaluating the generated learning path in terms of link prediction accuracy.

Abstract: Provided is a system of generating multi-style learning tutorials based on learning preference evaluation. The system dynamically explores preferences of learners in a learning process from a time dimension through a proposed deep reinforcement learning model, so that a deep reinforcement learning agent can accurately express learning behavior features of learners and realize the personalized and accurate construction of course tutorials. At the same time, using an internal knowledge base and an external knowledge base as resource support, a multi-modal knowledge map with a plurality of definition relationships is designed to overcome the limitations of construction of a course tutorial method.

Abstract: The invention provides a light spot scanning device, a scanning method thereof, and a medical cosmetology device, belonging to the technical field of medical cosmetology, comprising a laser and a collimating lens and a reflector arranged in sequence along the optical path transmission direction of the laser. The reflector is also connected with a driving member, the laser beam emitted by the laser forms a linear light spot through the collimating lens, and the reflector is driven to continuously rotate according to a preset path through the driving member. A plurality of linear light spots formed by the continuous rotation are sequentially overlapped on the light exiting side of the reflector to form a scanning linear light spot. Each time the reflector rotates, a group of linear light spots is formed. After continuous rotation, multiple groups of sequentially overlapping linear light spots are formed on the light exiting side of the reflector, called scanning linear light spots.

Abstract: The present disclosure discloses a score board for a competition and a hinge group thereof. The score board includes a first box and a second box which are connected through a hinge group, the hinge group includes an upper hinge and a lower hinge, the upper hinge and the lower hinge are mutually hinged together, the upper hinge is hinged to the first box, the upper hinge is slidably disposed on the second box, and the lower hinge is slidably disposed on the first box. When the first box and the second box are unfolded, display screens on front surfaces of the first box and the second box can be used to display scores of the competition.

Abstract: The present invention discloses a method for preventing dsRNA bacterial solutions from being degraded by UV light and application thereof in control of silverleaf whiteflies which relates to technical field of pest control. The method for preventing dsRNA bacterial solutions from being degraded by UV light of present invention is to mix dsRNA bacterial solutions with nanomaterial solutions to prepare mixed solutions of nanomaterial as well as dsRNA bacterial solutions, wherein the nanomaterial is one of MON, Fe3O4, TiC and SiC. Nanomaterials are used to protect dsRNA bacterial solutions from being degraded by UV light, so that lethal effect of dsGawky on silverleaf whiteflies can achieve purpose of pest control. The method is easy to operate, low in cost, good in effectiveness as well as sensitivity, high in insecticidal efficiency, and has other advantages such as environmental friendliness as well as good application prospects.

Abstract: The present disclosure relates to a method for screening an acetylcholinesterase inhibitor, and further relates to a kit and system for screening an acetylcholinesterase inhibitor.

Abstract: A display panel includes a substrate, a plurality of connection wires, an isolation region and a first electrostatic discharge structure disposed on a second surface. The substrate includes a first surface and a second surface that are opposite, and a plurality of side surfaces, and at least one of the side surfaces is a selected side surface. The connection wires are arranged side by side at intervals, and each of the connection wires includes a first-segment wire, a second-segment wire and a third-segment wire connected in sequence. The first-segment wire is located on the first surface, the second-segment wire is located on the selected side surface, and the third-segment wire is located on the second surface. The first electrostatic discharge structure is arranged on a side of third-segment wires away from the selected side surface. The isolation region is located between the third-segment wires and the first electrostatic discharge structure.

Abstract: A display panel includes a backplane, back traces, side traces and blocking portions. The backplane includes a display surface, a non-display surface, and side surfaces connected to the two surfaces, where a side surface is a selected side surface. The back traces and the blocking portions are arranged on the non-display surface. Each back trace includes a first line segment and a second line segment, whose extension directions intersect. The side traces are arranged on the selected side surface. Of each side trace, an end is on the display surface, and the other end is on the non-display surface. Each side trace is electrically connected to a first line segment in a respective back trace, where the first line segment has the same extension direction as the other end of each side trace. Two adjacent first line segments are provided with a blocking portion therebetween.

Abstract: Embodiments of the present disclosure relate to device, method, device and computer readable storage media of beam-forming scheme in higher rank transmission for massive multiple input multiple output system. The method comprises determining a target beam for carrying a transmission of a reference signal from the base station to the user equipment; determining a target arrangement of the plurality of ports formed at an antenna array of the base station; and transmitting, to the user equipment, different portions of the target beam through a plurality of ports based on the target arrangement. In this way, a new beamforming method when Massive-MIMO choose higher rank transmission in multi ports communication system is proposed. The gNB would only select the best beam with different halves in the same polarization to keep the QCL principles.

Abstract: A method for preparing black cotton-like fibers is provided, using a DTY texturing process, wherein POY and FDY fibers containing carbon black are sequentially passed through a first yarn guide, a yarn guide roller, a tensioner, a first yarn feeding roller, pre-entangling, a second yarn feeding roller, a first deformation hot box, a cooling plate, a false twister, a third yarn feeding roller, a middle entangling device, a setting hot box, a setting yarn feeding roller, oiling, and winding to obtain a black cotton-like fiber; the first yarn guide is a yarn guide wheel; a tow contacts a groove bottom of the first yarn guide in the process of movement, driving the first yarn guide to rotate; and the tensioner is a magnetic tensioner.

Abstract: The present disclosure discloses a method for preparing a green slow-release preservative paper used for fruit and vegetable preservation. The method includes: step 1, preparing a core paper loaded with biological preservative; step 2, preparing a base membrane loaded with fruit and vegetable respiration inhibitor; and step 3, heating and pressing the core paper loaded with biological preservative and the base membrane loaded with fruit and vegetable respiration inhibitor to obtain the green slow-release preservative paper. The present disclosure uses a biological preservative as a main material and an absorbent paper or a non-woven fabric as an auxiliary material to prepare the green slow-release preservative paper used for fruit and vegetable preservation through a layer-by-layer film covering method.

Abstract: A method for preparing full-dull cotton-like polyester fibers includes: sequentially passing a full-dull polyester POY fiber and a full-dull polyester FDY fiber through a first yarn guide, a yarn guide tube, a second yarn guide, a first yarn feeding roller, pre-entangling, a second yarn feeding roller, a first deformation hot box, a cooling plate, a false twister, a third yarn feeding roller, a middle entangling device, a setting hot box, a setting yarn feeding roller, oiling, and DTY winding and forming to obtain the same. The first and second yarn guides are both yarn guide wheels; a tow is wound around the first yarn feeding roller for 2-3 turns; an inferior angle of the tow before and after contacting a groove bottom of the second yarn guide is 140°-160°; a linear velocity ratio of the first yarn feeding roller to the second yarn feeding roller is 1.05-1.06.

Abstract: An array substrate and a manufacturing method thereof, a display panel, and a display device are provided. The array substrate includes a bonding region and a non-bonding region, and further includes: a rigid substrate, in the non-bonding region; a driving circuit layer, in the non-bonding region; a light-emitting diode layer, on a side of the driving circuit layer away from the rigid substrate; a flexible base layer, in the bonding region and on the same side of the rigid substrate as the driving circuit layer; and a bonding wire layer, on a side of the flexible base layer away from the rigid substrate. The bonding wire layer and the flexible base layer is capable of being bent along an edge of the rigid substrate to a side of the rigid substrate away from the driving circuit layer.

Abstract: A recycled polyester filament and preparation method therefor are disclosed. In the process of preparing a fiber from a recycled polyester according to the FDY process, the ring-blowing is used for cooling, and the distribution of spinneret holes on the spinneret is controlled to meet certain conditions, then the recycled polyester filament is obtained by relaxation heat treatment after a fully drawn yarn is produced. The spinneret holes are C-shaped spinneret holes and circular spinneret holes, the cross-section of the C-shaped spinneret hole is composed of an outer arc, an inner arc, and two line segments, and two endpoints of the outer arc are A and B respectively; wherein the certain conditions include: all the spinneret holes are distributed in concentric circles, and the C-shaped spinneret holes are located on the outermost circle, rotating at different angles and randomly distributed.

Abstract: Embodiments of this application relate to the communication field, and disclose a method, a device, and a system for transmitting a node identifier, to reduce a limitation on delivery of an SR POLICY route and improve network performance The method includes: A forwarding device sends a node identifier to a controller. The forwarding device receives a first SR POLICY route from the controller, where a target attribute of the first SR POLICY route is the node identifier. The forwarding device determines that the node identifier matches the target attribute of the first SR POLICY route, and forwards a traffic packet according to the first SR POLICY route.

Abstract: A wiring board includes a mother board and a daughter board that are stacked, a bonding layer disposed between the mother board and the daughter board, and at least one side wiring. The mother board includes a first substrate, and a first wiring layer disposed on the first substrate and including at least one first connection pad. The daughter board is disposed on a side of the first substrate away from the first wiring layer. The daughter board includes a second substrate, and a second wiring layer disposed on the second substrate and including at least one second connection pad. The at least one side wiring is connected, via a respective end thereof, to the at least one first connection pad in one-to-one correspondence, and the at least one side wiring is connected, via respective another end thereof, to the at least one second connection pad in one-to-one correspondence.

Abstract: A photovoltaic device includes one or more features that taken alone or in combination enhance its efficiency. Some embodiments may comprise a tandem solar device in which a top PV cell is fabricated upon a front transparent substrate, that also serves as the top encapsulating substance. The top PV cell including the front encapsulating substance is then bonded (e.g., using adhesive) to a bottom PV cell in order to complete the tandem device. Using the same transparent, insulating element as both front encapsulating substance and a substrate for fabricating the top PV cell, obviates to the need to provide a separate structure (with resulting interfaces) to perform the latter role. For tandem and non-tandem PV devices, a Through-Substrate-Via (TSV) structure may extend through an insulating substrate in order to provide contact with an opposite side (e.g., back electrode). Embodiments may find particular use in fabricating shingled perovskite photovoltaic solar cells.