Abstract: The present invention discloses a direct current power supply system for urban rail transit cascaded direct-hanging stations, belonging to the field of power electronic technologies. The power supply system includes a 110 kV high-voltage power grid, a 35 kV medium-voltage power grid, a cascaded H-bridge medium-voltage direct-hanging converter, a 650V-800V common direct current bus, a standby power supply and direct current electric loads. The cascaded H-bridge medium-voltage direct-hanging converter is formed by 3n modules in cascade, and each module is formed by an H-bridge converter and an isolated DC/DC converter connected in series.

Abstract: A method includes receiving seismic data representing a subterranean volume, including a plurality of signals, obtaining a machine learning model trained to predict energy arrivals in the signals using seismic data that does not represent the subterranean volume, predicting energy arrivals in a quality control portion of the plurality of signals of the seismic data using the machine learning model, determining that the predicted energy arrivals for the quality control portion are not accurate, training the machine learning model to predict the energy arrivals using a training data set that represents the subterranean volume, predicting the energy arrivals in the seismic data using the machine learning model that was trained based at least in part on the training data set, and generating a velocity model based on the predicted energy arrivals.

Abstract: An open earphone comprising a sound production component and an ear hook is provided. The ear hook includes a first portion and a second portion. The first portion is hung between an auricle and the head of a user, the second portion extends toward a front outer side of the auricle and connects to the sound production component, and the sound production component is located close to an ear canal but does not block the ear canal opening. The open earphone and the auricle have a first projection and an eighth projection on a sagittal plane, respectively, a centroid of a portion of the first projection corresponding to the sound production component have a first distance to a highest point of the eighth projection in a vertical axis direction, and a ratio of the first distance to a height of the eighth projection is within a range of 0.35-0.

Abstract: Systems and methods for supporting image-guided procedures include a device having an instrument usable to collect location data for one or more passageways and one or more processors coupled to the instrument. The one or more processors are configured to organize a plurality of points within the location data based on a corresponding insertion depth of the instrument when each of the plurality of points is collected, create a passageway tree based on the points, identify at least three non-collinear landmark locations within the passageway tree, create a seed transformation between one or more of the at least three non-collinear landmark locations and corresponding model locations in model data, and register, using the seed transformation, the plurality of points to the model data for the one or more passageways. In some embodiments, the at least three non-collinear landmark locations are based on a main branch point in the passageway tree.

Abstract: A medical robotic system and method of operating such comprises taking intraoperative external image data of a patient anatomy, and using that image data to generate a modeling adjustment for a control system of the medical robotic system (e.g., updating anatomic model and/or refining instrument registration), and/or adjust a procedure control aspect (e.g., regulating substance or therapy delivery, improving targeting, and/or tracking performance).

Abstract: A method is performed by a computing system. The method includes receiving image data from an imaging device, and determining, using the image data, a plurality of image-space tools, each image-space tool associated with a tool of a plurality of tools, each tool controlled by a manipulator of a plurality of manipulators. The method further includes determining a first correspondence between a first image-space tool of the plurality of image-space tools and a first tool of the plurality of tools based on a first disambiguation setting associated with the first tool.

Abstract: A non-transitory machine-readable media stores instructions that, when run by one or more processors, cause the one or more processors to store a deformable model of a patient anatomy and deform the deformable model based on a measured deformation of a branched anatomical structure of the patient anatomy. The deformable model includes a skeleton tree of nodes and linkages representing the branched anatomical structure of the patient anatomy. Each of the nodes is located at a respective bifurcation of the branched anatomical structure, and at each respective bifurcation the corresponding linkages include an orientation. The deformable model is deformed by modifying the orientations of the linkages of the branched anatomical structure.

Abstract: Systems and methods may use machine learning to automate the parameterization process for multi-stage iterative source separation. Seismic signals that are generated by a plurality of sources are received by a plurality of sensors within a field as a blended signal. An automated machine learning model that has been trained on blended and unblended signals determines if the incoming blended signal has a relatively high or low signal to noise ratio and then selects a threshold value based on the detected signal to noise ratio. The blended signal is then separated according to the source of the seismic data. A seismic image based on the separated seismic data is then generated which can then be used to adjust one or more control parameters in a machine or tool within the field.

Abstract: Embodiments of the present disclosure provide a headphone, including a compartment body assembly and an ear hook assembly. The compartment body assembly may be configured to contact the front side of an ear of a user, and at least a portion of the ear hook assembly may be provided between the rear side of the ear and the head of the user. The ear hook assembly may be detachably connected with the compartment body assembly, and a pullout resistance between the ear hook assembly and the compartment body assembly may be within a range of 0.45 kgf to 5.7 kgf.

Abstract: A medical robotic system and method of operating such comprises taking intraoperative external image data of a patient anatomy, and using that image data to generate a modeling adjustment for a control system of the medical robotic system (e.g., updating anatomic model and/or refining instrument registration), and/or adjust a procedure control aspect (e.g., regulating substance or therapy delivery, improving targeting, and/or tracking performance).

Abstract: A non-transitory machine-readable media storing instructions that, when run by one or more processors, cause the one or more processors to store a deformable model of anatomic passageways of a patient anatomy. The deformable model comprises a plurality of model passageway links connected at connection points, and each of the model passageway links includes a centerline. At each respective connection point, the corresponding passageway links include an orientation. The instructions further cause the one or more processors to modify the deformable model by modifying relative orientations of one or more model passageway links of the plurality of model passageway links. The modifying is based on one or more modeling parameters that affect a shape of the plurality of model passageway links.

Abstract: A system includes a fixture having a known location in a surgical reference frame, a medical instrument, a position measuring device, and a computing system. The fixture includes a constraint structure having a known constraint structure pose in the surgical reference frame. The medical instrument includes a reference portion movably coupled to the fixture, an elongate flexible portion coupled to the reference portion, wherein the elongate flexible portion is sized to pass through the constraint structure, and a shape sensor. The position measuring device measures motion of the reference portion with respect to the fixture.

Abstract: Embodiments of the present disclosure provide an earphone including: a sound generation component, including a transducer and a housing accommodating the transducer, the housing being provided with a sound outlet hole and a pressure relief hole, the sound outlet hole being provided on an inner side of the housing facing an auricle, and the pressure relief hole being provided on an other side of the housing; an ear hook configured to place the sound generation component near an ear canal without blocking the ear canal in a wearing state; and a microphone assembly at least including a first microphone and a second microphone provided in the sound generation component or the ear hook, the sound generation component or the ear hook being provided with a first sound receiving hole and a second sound receiving hole corresponding to the first microphone and the second microphone, respectively.

Abstract: A pharmaceutical composition for preventing or treating Alzheimer's disease and use thereof are disclosed and belong to the technical field of medicines. The pharmaceutical composition includes (Z)-3-(N-(3-bromo-4-fluorophenyl)-N?-hydroxyformamido)-4-(2-guanidinoethyl)amino)-1,2, 5-oxadiazole and anhydroicaritin. A pharmacodynamic experiment proves that the pharmaceutical composition achieves a synergistic therapeutic effect on treating Alzheimer's disease.

Abstract: A system may comprise a processor and a memory having computer readable instructions stored thereon. The computer readable instructions, when executed by the processor, cause the system to record position data for an instrument during an image capture period and determine an instrument position change from the recorded position data. The computer readable instructions, when executed by the processor, may also cause the system to compare the instrument position change to a position change threshold and based on the comparison, determine whether to use image data captured by an imaging system during the image capture period in a registration procedure.

Abstract: The present invention discloses a direct current power supply system for urban rail transit cascaded direct-hanging stations, belonging to the field of power electronic technologies. The power supply system includes a 110 kV high-voltage power grid, a 35 kV medium-voltage power grid, a cascaded H-bridge medium-voltage direct-hanging converter, a 650V-800V common direct current bus, a standby power supply and direct current electric loads. The cascaded H-bridge medium-voltage direct-hanging converter is formed by 3n modules in cascade, and each module is formed by an H-bridge converter and an isolated DC/DC converter connected in series.

Abstract: The present disclosure relates to acoustic technology, in particular to an earphone including a sound generation portion. The sound generation portion includes a transducer and a housing for accommodating the transducer. The earphone further includes an earhook. The earhook includes a first portion and a second portion. The first portion may be hung between an auricle and the head of a user, and the second portion may be connected to the first portion, extends toward an anterolateral side of the auricle, and may be connected to the sound generation portion. The sound generation portion may be fixed near an ear canal without blocking an opening of the ear canal. In at least one frequency range, when an input current of the transducer does not exceed 35.3 mA, a maximum sound pressure that the sound generation portion is able to provide to the ear canal may not be smaller than 75 dB.

Abstract: A mobile power source that has a battery pack including at least two battery cell assemblies each having frame that has a first support member and a second support member, each of the first and second support members including a plurality of cylindrical recesses that receive the plurality of battery cells to support the battery cells. Bus bars are coupled to the first support member via injection molding and each is configured to electrically connect to at least two battery cells. The bus bars each include an elongated conductive body that has a base and fingers extending laterally away from the base. Each of the fingers extend within a first plane, and the base extends within a second plane that is parallel to the first plane and offset therefrom.

Abstract: An exemplary system accesses a three-dimensional (3D) model of an anatomical structure, applies a first detection process to the 3D model to detect a single-layer anatomical feature in the anatomical structure, applies a second detection process, different from the first detection process, to the 3D model to detect a non-single-layer anatomical feature in the anatomical structure, and provides a representation of the anatomical structure based on the 3D model, the detected single-layer anatomical structure, and the detected non-single-layer anatomical structure. In some implementations, the representation of the anatomical structure and a representation of a potential path to be traversed by a medical instrument in the anatomical structure are displayed.

Abstract: A method includes receiving first training well logs, generating second training well logs by injecting one or more different types of systematic errors, random errors, or both into at least a portion of the first training well logs, training a machine learning model to correct well logs by configuring the machine learning model to reduce a dissimilarity between at least a portion of the first and second training well logs, receiving one or more implementation well logs, and generating one or more corrected well logs by correcting at least a portion of the one or more implementation well logs using the machine learning model that was trained.