Abstract: A base station antenna comprises a reflector; a phase shifter that includes a phase shifter printed circuit board; and a radiating element that includes at least one feed stalk and a radiator mounted on the feed stalk forwardly of the reflector. The feed stalk is mounted directly on the phase shifter printed circuit board.

Abstract: Disclosed is a micro-medical robot-based guidewire for vascular intervention. The guidewire includes: a core shaft; an outer coil surrounding an outer circumference of a distal portion of the core shaft; a tip end to which a front end of the core shaft and/or a front end of the outer coil is connected; an outer joining unit configured to connect a rear end of the outer coil and a rear end of the core shaft; an inner joining unit, disposed inside the outer coil, configured to connect the outer coil and an outer surface of the core shaft; and at least two magnetic bodies, disposed at a specific section in the inner space of the outer coil, wherein each of the magnetic bodies with each through-hole being formed at each center thereof is configured to allow the front end of the core shaft to go through said each through-hole.

Abstract: A rechargeable battery includes: an electrode assembly; a case to accommodate the electrode assembly; a subplate including: a first planar portion connected to the electrode assembly; and a protruding portion protruding on the first planar portion; a cap plate coupled to an open first side of the case; and a terminal plate on the cap plate, and electrically connected to the subplate, the terminal plate including: a recessed first portion including a bottom surface; and a second portion including a second planar portion connected to the recessed first portion. The recessed first portion of the terminal plate is in contact with the protruding portion of the subplate.

Abstract: Disclosed is a multi-base station queued preambles allocation method based on collaboration between multiple agent, which provides a non-competitive preambles allocation method in a scenario of multiple base stations and multiple cells, so as to solve the congestion problem caused during random access of massive MTCDs. The devices are queued to select the preambles based on deep reinforcement learning, and a training method based on federal learning is applied, thus effectively solving the congestion problem caused by competitive access. First, the newly accessed devices are grouped and the level of priority is set according to a delay tolerance time. Then, the device are reasonably allocated to idle queues by means of a multi-agent reinforcement learning algorithm. Finally, by means of a federal training method, the neural network of each agent is synchronously optimized by means of average optimization of neural network gradients, thus completing preambles allocation to each agent.

Abstract: The present disclosure relates to large cell sheets, solar cells, shingled solar modules, and manufacturing method thereof. A top surface of a boundary portion of units of the large cell sheet is divided into a cutting area, top surface bonding areas and top surface electrically-conductive contact areas. The cutting area is configured in a way that the large cell sheet can be cut along the cutting area; the top surface bonding areas and the top surface electrically-conductive contact areas are provided alternately, the cutting area and the top surface electrically-conductive contact areas are formed as an overlapping edge of the solar cell, and after the splitting of the large cell sheet, the top surface electrically-conductive contact areas can directly contact the bottom surface of another solar cell to achieve electrically-conductive connection.

Abstract: A battery cell and a battery cell manufacturing method are disclosed. A battery cell includes one or more electrode assemblies each including a positive electrode and a negative electrode, a case in which the one or more electrode assemblies are housed, a cap cover configured to cover an opening of the case, an electrode tab connected to the one or more electrode assemblies, and a boss terminal guidable by the cap cover, passing through the cap cover, and coupled to the electrode tab.

Abstract: A secondary battery includes a case having an opening formed at least at one end thereof; an electrode assembly accommodated in the case; a current collector electrically connected to the electrode assembly; a cap plate in the opening of the case; a retainer between the electrode assembly and the case; and a pressurizing member configured to apply pressure to the case from the retainer.

Abstract: A secondary battery includes an electrode assembly including a first electrode plate and a second electrode plate, a case for accommodating the electrode assembly, and having one open side, a cap plate coupled to the case at the one open side, a first terminal and a second terminal electrically connected to the electrode assembly, and coupled to the cap plate, and a lower insulator at a lower portion of the electrode assembly, located between the electrode assembly and another side of the case that faces the cap plate in a longitudinal direction, and including an inclined part corresponding to a direction of the electrode assembly on at least one edge of an upper end of the lower insulator.

Abstract: Disclosed is a multi-base station queued preambles allocation method based on collaboration between multiple agent, which provides a non-competitive preambles allocation method in a scenario of multiple base stations and multiple cells, so as to solve the congestion problem caused during random access of massive MTCDs. The devices are queued to select the preambles based on deep reinforcement learning, and a training method based on federal learning is applied, thus effectively solving the congestion problem caused by competitive access. First, the newly accessed devices are grouped and the level of priority is set according to a delay tolerance time. Then, the device are reasonably allocated to idle queues by means of a multi-agent reinforcement learning algorithm. Finally, by means of a federal training method, the neural network of each agent is synchronously optimized by means of average optimization of neural network gradients, thus completing preambles allocation to each agent.

Abstract: Disclosed is a guidewire steering micro-robot. The guidewire steering micro-robot includes a guidewire, and a steering unit provided at an end portion of the guidewire, the steering unit including a magnetic body to control and steer a position of the guidewire by an external magnetic field.

Abstract: A secondary battery includes an electrode assembly including a first tab and a second tab at opposite ends of the electrode assembly in a longitudinal direction, respectively; a case configured to accommodate the electrode assembly and in which a first opening and a second opening are defined at opposite ends of the case in the longitudinal direction, respectively; a first cap plate coupled to the first opening of the case and insulated from and penetrated by a first terminal that is electrically coupled to the first tab of the electrode assembly, the first cap plate including a second terminal electrically coupled to the second tab of the electrode assembly; and a second cap plate coupled to the second opening of the case and electrically coupled to the second tab of the electrode assembly.

Abstract: An outer terminal connection structure of a secondary battery, includes: a first current collector to be welded to non-coating portion tabs of an electrode assembly; a second current collector electrically connected to the first current collector; a cap plate above the second current collector, and connected to an opening of a case, the cap plate having a plate hole; an outer terminal above the cap plate, and electrically connected to the second current collector; an insulator passing through the cap plate to be located above and below the cap plate, the insulator to support the outer terminal at an upper side, and contact the second current collector at a lower side; and a terminal connection part passing through the plate hole to electrically connect the second current collector to the outer terminal. The outer terminal connection structure includes a rotation prevention structure to restrict a relative rotation.

Abstract: A secondary battery includes an electrode assembly including a first electrode tab and a second electrode tab, which are exposed at opposite sides, respectively; a first collector electrically connected to the first electrode tab; a case configured to accommodate the electrode assembly and the first collector and having opposite open sides; a first cap plate configured to seal an opening of a first side of the case; and a first terminal electrically connected to the first collector and exposed to an outside of the first cap plate, and the first collector includes a first collector plate and a second collector plate, the first collector plate includes: a central portion; an edge portion extending from the central portion and coupled to the first electrode tab; and a connection portion, the connection portion including at least one bent part.

Abstract: A secondary battery includes: an electrode assembly having a first electrode tab and a second electrode tab exposed on opposite sides, respectively; a first current collection part electrically coupled to the first electrode tab; a case accommodating the electrode assembly and the first current collection part and having opposite sides opened; a first cap plate sealing a first side opening from among the opposite sides of the case; a first terminal mechanically and electrically coupled to the first current collection part and exposed to the outside of the first cap plate; and a blind rivet coupling the first terminal and the first current collection part.

Abstract: A secondary battery includes: an electrode assembly including a first electrode tab and a second electrode tab, the first electrode tab and the second electrode tab being exposed at opposite sides of the electrode assembly; a first collector electrically coupled to the first electrode tab; a case having two open sides and accommodating the electrode assembly and the first collector therein; a first cap plate sealing one of the open sides of the case; and a first terminal mechanically and electrically coupled to the first collector and exposed to the outside of the first cap plate. The first collector includes a protrusion protruding outwardly and coupled to the first terminal, and the first terminal has a terminal through-hole in which the protrusion is accommodated.

Abstract: A memory control system includes: a memory having a main storage module and a built-in EEPROM; a storage controller which, in a normal mode, reads a program in the main storage module on the basis of an instruction of a processor and performs read-write control on the built-in EEPROM, and in a test mode, performs read-write control on the main storage module or the built-in EEPROM on the basis of configuration of a test control signal, or completes a self-test on the basis of an instruction of the test control signal; and the processor. According to the present disclosure, resource consumption is greatly reduced; logic of a hardware control reading part after dormancy is omitted and the time consumed during dormancy and wake-up is reduced; and only one counter and one time sequence control unit are used to implement control of the time sequence of the whole system.

Abstract: A secondary battery including: an electrode assembly including a negative electrode tab and a positive electrode tab at opposite ends thereof in a longitudinal direction; a case accommodating the electrode assembly, both ends of the case in the longitudinal direction being open; a pair of cap plates respectively coupled to the open ends of the case; and a negative electrode terminal and a positive electrode terminal respectively electrically connected to the negative electrode tab and the positive electrode tab and exposed at an outside of the cap plates, respectively. A current collector is on an upper portion of the negative electrode tab or the positive electrode tab, a terminal connection part is on the current collector, and the terminal connection part passes through a plate hole in the cap plate to be electrically connected to the negative electrode terminal or the positive electrode terminal.

Abstract: Disclosed is a secondary battery capable of a sufficient pressing force during welding between the terminal and the current collector plate to induce a strong bonding force, the secondary battery including an electrode assembly having first and second electrode tabs exposed on respective sides, a first current collection part electrically coupled to the first electrode tab, and including an edge part welded to the first electrode tab, and a central part, a case accommodating the electrode assembly and the first current collection part, a first cap plate sealing a side opening of the case, a first terminal mechanically and electrically coupled to the first current collection part, and exposed to an exterior of the first cap plate, and a support between the central part of the first current collection part and the electrode assembly, wherein the central part protrudes further toward the first cap plate than the edge part.

Abstract: A route planning method for large-scale capacitated arc routing problem is disclosed, belonging to the field of combinatorial optimization. The present disclosure firstly performs global optimization and proposes a low-cost decomposition optimization solution based on CARP, which pertinently preserves more excellent decompositions during iterations. And, the present disclosure is also applied to a local search stage, and proposes an improved route construction rule. In a process of route insertion, a problem of excessive useless cost caused by a vehicle with almost full load returning to a depot is considered. After improvement, local search can be carried out more effectively, thus further improving the solution quality. Compared with an existing route planning method, the present disclosure considers details and characteristics of CARP optimization problems in a more detailed manner, thus achieving solutions with a lower cost and improving the stability by about two to three times.

Abstract: A method of presenting prompt information by utilizing a neural network which includes a BERT model and a graph convolutional neural network (GCN), comprising: generating a first vector based on a combination of an entity, a context of the entity, a type of the entity and a part of speech of the context by using BERT model; generating a second vector based on each of predefined concepts by using BERT model; generating a third vector based on a graph which is generated based on the concepts and relationships thereamong, by using GCN; generating a fourth vector by concatenating the second and third vectors; calculating semantic similarity between the entity and each concept based on the first and fourth vectors; determining, based on the first vector and the semantic similarity, that the entity corresponds to one of the concepts; and generating the prompt information based on the determined concept.