Abstract: The present invention relates to the technical field of coal mine drilling and discloses a mining drilling system. A driving drill rod comprises a limiting section and an anti-rotation section. One end of a spindle is provided with a chuck, and one end of the chuck is provided with a front-end cover. The chuck is clamped onto the limiting section, and the front-end cover is slidably connected to the anti-rotation section. The front-end cover drives the driving drill rod to rotate. A graded hydraulic system controls the clamping pressure of the chuck on the limiting section. A front gripper comprises a front support plate and a rear support plate disposed at intervals. Each of the front and rear support plates is provided with a through hole, and each through hole includes an opening. The width of the opening is greater than or equal to the diameter of a large-sized drilling tool. A swinging body is arranged between the front and rear support plates and is configured to swing beyond both plates.

Abstract: Aspects of the present disclosure describe a method including predicting a first set of ansatz terms and a first plurality of amplitudes associated with the first set of ansatz terms; minimizing energy of the system based on the first set of ansatz terms and the first plurality of amplitudes; computing perturbative corrections using one or more ansatz wavefunctions; determining whether energy of the system converges; and predicting, in response to determining that the energy of the system does not converge, a second set of ansatz terms and a second plurality of amplitudes associated with the second set of ansatz terms.

Abstract: Aspects of the present disclosure describe a method including compressing and uncompressing redundant quantum information encoded in quantum computers; processing quantum information in the compressed space; and computing, in response to determining the ansatz terms, a set of optimal transformations.

Abstract: The invention relates to the technical field of thermal power generation, and discloses a crack prediction method and apparatus, an electronic device and a computer-readable storage medium. The method includes: detecting a magnetic flux leakage at a to-be-detected welding joint; and predicting, based on the magnetic flux leakage at the to-be-detected welding joint, a tendency of the to-be-detected welding joint to have a crack. This allows for the prevention of cracking at the joint or for timely repair and preventive treatment at locations of potential crack, thereby improving operation safety of units.

Abstract: Aspects of the present disclosure describe a method including predicting a first set of ansatz terms and a first plurality of amplitudes associated with the first set of ansatz terms; minimizing energy of the system based on the first set of ansatz terms and the first plurality of amplitudes; computing perturbative corrections using one or more ansatz wavefunctions; determining whether energy of the system converges; and predicting, in response to determining that the energy of the system does not converge, a second set of ansatz terms and a second plurality of amplitudes associated with the second set of ansatz terms.

Abstract: Aspects of the present disclosure describe a method including predicting a first set of ansatz terms and a first plurality of amplitudes associated with the first set of ansatz terms; minimizing energy of the system based on the first set of ansatz terms and the first plurality of amplitudes; computing perturbative corrections using one or more ansatz wavefunctions; determining whether energy of the system converges; and predicting, in response to determining that the energy of the system does not converge, a second set of ansatz terms and a second plurality of amplitudes associated with the second set of ansatz terms.

Abstract: The present invention belongs to the technical field of coal mine drills, and relates to a coal mine automatic directional drill, comprising a moving platform, a machine frame, a clamper, a main manipulator, a power head, a drill pipe storage system, a control system and a hydraulic system. In the present invention, a structure of the power head is improved, an angle adjuster is arranged on one side of a gearbox away from a main motor, and a transmission shaft in the angle adjuster is circumferentially and fixedly connected with a driving shaft, thus a toolface azimuth is adjusted accurately and efficiently and a structure of a rotary brake device of the main motor is simplified by the angle adjuster which has functions of accurate angle adjustment, locking and anti-rotation.

Abstract: The present invention relates to a coal mine intelligent directional drill and its drilling method, belonging to the technical field of coal mine drills. It comprises a moving platform, machine frame, clamper, main manipulator, power head, drill pipe storage system, control system, and hydraulic system. The power head structure is improved by adding an angle adjuster with accurate angle adjustment, locking, and anti-rotation functions. The angle adjuster is positioned on the gearbox side opposite the main motor, connected via a driving shaft. The control system includes a toolface azimuth detection and initialization system that works with the angle adjuster. This solves prior issues such as the absence of specialized toolface azimuth adjustment devices, low precision, low track adjustment efficiency, and challenges in achieving automatic directional drilling in the prior art. The invention enhances precision and efficiency, enabling automated, intelligent directional drilling.

Abstract: The present invention belongs to the technical field of coal mine drills, and relates to a coal mine automatic directional drill, comprising a moving platform, a machine frame, a clamper, a main manipulator, a power head, a drill pipe storage system, a control system and a hydraulic system. In the present invention, a structure of the power head is improved, an angle adjuster is arranged on one side of a gearbox away from a main motor, and a transmission shaft in the angle adjuster is circumferentially and fixedly connected with a driving shaft, thus a toolface azimuth is adjusted accurately and efficiently and a structure of a rotary brake device of the main motor is simplified by the angle adjuster which has functions of accurate angle adjustment, locking and anti-rotation.

Abstract: The present invention relates to a coal mine intelligent directional drill and its drilling method, belonging to the technical field of coal mine drills. It comprises a moving platform, machine frame, clamper, main manipulator, power head, drill pipe storage system, control system, and hydraulic system. The power head structure is improved by adding an angle adjuster with accurate angle adjustment, locking, and anti-rotation functions. The angle adjuster is positioned on the gearbox side opposite the main motor, connected via a driving shaft. The control system includes a toolface azimuth detection and initialization system that works with the angle adjuster. This solves prior issues such as the absence of specialized toolface azimuth adjustment devices, low precision, low track adjustment efficiency, and challenges in achieving automatic directional drilling in the prior art. The invention enhances precision and efficiency, enabling automated, intelligent directional drilling.

Abstract: Systems and methods for enhancing accuracy of electron pair approximation using non-bosonic perturbation (PT2) correction are provided. The method may comprise generating a unitary pair coupled cluster double (upCCD) Ansatz to determine geometry coordinates of a molecule, inputting, using a graphical user interface, the geometry coordinates of the molecule, performing, using a processor of a computing device comprising the processor and a memory, orbital optimization to generate an orbital optimization upCCD (oo-upCCD) comprising an energy calculation, and performing, using the processor, energy correction on the energy calculation of the oo-upCCD based on a second order perturbation theory (PT2), generating a PT2 correction energy value of the molecule. The computing device may comprise a quantum computer.

Abstract: Aspects of the present disclosure describe a method including predicting a first set of ansatz terms and a first plurality of amplitudes associated with the first set of ansatz terms; minimizing energy of the system based on the first set of ansatz terms and the first plurality of amplitudes; computing perturbative corrections using one or more ansatz wavefunctions; determining whether energy of the system converges; and predicting, in response to determining that the energy of the system does not converge, a second set of ansatz terms and a second plurality of amplitudes associated with the second set of ansatz terms.

Abstract: Disclosed are a method and device for evaluating damage caused by secondary stress to a vacuum vessel, a terminal device, and a medium, to perform following steps: obtaining secondary stress of a vacuum vessel that passes a primary-stress failure evaluation; obtaining structural damage parameters of the vacuum vessel when determining, based on evaluation parameters for the primary-stress failure evaluation of the vacuum vessel and the obtained secondary stress, that the vacuum vessel meets a precondition for a progressive deformation; and determining, based on the obtained structural damage parameters, whether the vacuum vessel meeting the precondition for the progressive deformation experiences structural damage due to the progressive deformation. In this way, a vacuum vessel of a nuclear fusion reactor can be evaluated based on damage caused by the secondary stress.

Abstract: Aspects of the present disclosure describe a method including predicting a first set of ansatz terms and a first plurality of amplitudes associated with the first set of ansatz terms; minimizing energy of the system based on the first set of ansatz terms and the first plurality of amplitudes; computing perturbative corrections using one or more ansatz wavefunctions; determining whether energy of the system converges; and predicting, in response to determining that the energy of the system does not converge, a second set of ansatz terms and a second plurality of amplitudes associated with the second set of ansatz terms.

Abstract: During operation, an access point communicates with one or more electronic devices. Based at least on the communication, the access point determines an available capacity metric of the access point. Then, the access point provides the determined available capacity metric to one or more second access points, and receives available capacity metrics of the one or more second access points. Moreover, the access point compares the available capacity metric and a parameter corresponding to the available capacity metrics. Based at least in part on the comparison, the access point dynamically and selectively performs load balancing, where performing the load balancing involves providing a recommendation to at least a first electronic device of the one or more electronic devices, and where the recommendation indicates that the first electronic device, which is associated with the access point, transition to a different communication channel.

Abstract: Disclosed is 500-MPa low-yield-ratio weather-resistant bridge steel and a manufacturing method therefor; the weather-resistant bridge steel includes the following components in percentage by mass: C: 0.04%-0.09%, Si: 0.15%-0.30%, Mn: 1.40%-1.50%, P: 0.009%-0.015%, S: ?0.002%, Nb: 0.020%-0.050%, Ti: 0.010%-0.020%, V: 0.010%-0.030%, Cu: 0.30%-0.40%, Ni: 0.30%-0.45%, Cr: 0.45%-0.60%, Mo: 0.08%-0.15%, Alt: 0.02%-0.04%, and the balance Fe and inevitable impurities; through scientific component designing and a matched manufacturing method combining controlled rolling and cooling and tempering, the weather-resistant bridge steel has a low yield ratio, high low-temperature toughness and high elongation.

Abstract: Aspects of the present disclosure describe a method including compressing and uncompressing redundant quantum information encoded in quantum computers; processing quantum information in the compressed space; and computing, in response to determining the ansatz terms, a set of optimal transformations.

Abstract: The present disclosure discloses a method for switching an online list and a local list in a same window, and a computing device. Wherein the method comprises: presenting a display window in response to a trigger operation on a first list display entrance by a user, wherein list information of a first list and a list switching entrance are displayed in the display window; and refreshing the display window to display list information of a second list, in response to a trigger operation on the list switching entrance by the user; wherein the first list is a local list and the second list is an online list, or, the first list is an online list and the second list is a local list.

Abstract: The present disclosure discloses a method for switching an online list and a local list in a same window, and a computing device. Wherein the method comprises: presenting a display window in response to a trigger operation on a first list display entrance by a user, wherein list information of a first list and a list switching entrance are displayed in the display window; and refreshing the display window to display list information of a second list, in response to a trigger operation on the list switching entrance by the user; wherein the first list is a local list and the second list is an online list, or, the first list is an online list and the second list is a local list.

Abstract: During disclosed communication techniques, an electronic device (such as an access point) may receive one or more packets from another electronic device, where the other electronic device has an established connection or association with the electronic device, and the one or more packets are communicated using a first band of frequencies. Then, the electronic device may determine to recommend a basic service set (BSS) transition from the first band of frequencies to at least a second band of frequencies. Moreover, the electronic device may provide a request packet to the other electronic device with a recommendation with one or more candidates for the BSS transition, such as a channel in the second band of frequencies. Next, the electronic device may receive a response packet from the other electronic device, where the response packet indicates a remedial action of the other electronic device in response to the request packet.