Abstract: A well cementing method is described for improving cementing quality by controlling the hydration heat of cement slurry. By controlling the degree and/or rate of hydration heat release from cement slurry, the method improves the hydration heat release during formation of cement with curing of cement slurry, improves the binding quality between the cement and the interfaces, and in turn improves the cementing quality at the open hole section and/or the overlap section. The cementing method improves cementing quality of oil and gas wells and reduces the risk of annular pressure.

Abstract: An apparatus of a next generation Node B (gNB) comprises one or more baseband processors to generate an indication for a user equipment (UE) to indicate which synchronization signal block (SSB) based measurement timing configuration (SMTC) occasion can be used by the UE for one or more measurements, and to send the indication to the UE. The apparatus can include a memory to store the indication.

Abstract: For the problem of difficult roof anchor withdrawal at the end of a working face, a static crushing directional anchor withdrawal method at the end of a large-mining-height working face is provided. The method includes the following steps: designing key parameters of boreholes for static crushing, including a borehole position, a spacing between boreholes, a borehole depth, and a borehole diameter at the end of a working face; then determining parameters of a static crushing agent grouting technology device for the construction of a static crushing process; and carrying out an anchor withdrawal operation at the end.

Abstract: An organic semiconducting compound and an organic photoelectric component containing the same are provided. The organic semiconducting compound has a novel chemical structure to make the organic semiconducting compound have good response to the infrared light. The organic semiconducting compound can be applied to the organic photoelectric components such as organic photodetector (OPD), organic photovoltaic (OPV) cell, and organic field-effect transistor (OFET). Thus, the organic photoelectric components have better light absorption range and photoelectric response while in use.

Abstract: Embodiments of the present disclosure relate to methods, devices and computer readable storage medium for transport block size (TBS) configuration. In example embodiments, a terminal device transmits a random access preamble to a network device. The terminal device receives a random access response from the network device. The random access response includes a resource allocated for a reference TBS. Based on the reference TBS, the terminal device determines a TBS for transmitting data to the network device. Then, the terminal device transmits the data to the network device by using the determined TBS and the allocated resource. This TBS configuration is more flexible.

Abstract: The present disclosure provides a three-phase AC/DC converter aiming for low input current harmonic. The converter includes an input stage for receiving a three-phase AC input voltage, an output stage for at least one load, and one or more switching conversion stages, each stage including a plurality of half bridge modules. The switches in each module operate with a substantially fixed 50% duty cycle and are connected in a specific pattern to couple a DC-link and a neutral node of the input voltage. The AC/DC converter further includes one or more controllers adapted to vary the switching frequency of the switches in the switching conversion stages based on at least one of load voltage, load current, input voltage, and DC-link voltage. The converter can also include one or more decoupling stages, such as, inductive components adapted to decouple the output stage from the switching conversion stages.

Abstract: The present disclosure provides a gearbox of a rail vehicle, which belongs to the technical field of gear transmission.

Abstract: This application provides example communication methods, terminal devices, and network devices. One example method includes configuring, by a network device, a first bandwidth part BP and a second BP for a terminal device. The network device then sends a first TB to the terminal device. When the first BP and the second BP correspond to a same physical parameter, the first TB is mapped onto the first BP and the second BP. When the first BP and the second BP correspond to different physical parameters, the network device further sends a second TB to the terminal device, where the first TB is mapped onto the first BP, and the second TB is mapped onto the second BP.

Abstract: Systems, apparatuses, methods, and computer-readable media are provided for user equipment (UE) idle mode operations. In embodiments, a UE wakes up more than once during a Discontinuous Reception (DRX) cycle. Inter-frequency measurement requirements may be relaxed based on DRX cycle length. Some embodiments include radiofrequency (RF) circuitry warm-up overhead reduction by on-duration separation with RF circuitry switching pattern adaption. Some embodiments include and RF circuitry warm-up overhead reduction by adaptive synchronization signal block (SSB) reference symbol down-selection. Other embodiments may be described and/or claimed.

Abstract: A direct tensile and acoustic testing machine under rock seepage includes a sample and a support frame. A top of the support frame is fixed with a top plate, a bearing plate is provided above the top plate, the bearing plate is provided with a plurality of vertical force transferring rods, the force transferring rods vertically penetrate through the top plate and sliding fit with the top plate, lower ends of the force transferring rods are provided with a tensile base, a top of the tensile base is provided with a lower clamp holder, a bottom of the top plate is provided with an upper clamp holder, and a clamp center of the upper clamp holder overlaps with a clamp center of the lower clamp holder. An acoustic component and a seepage component are provided in the upper clamp holder and the lower clamp holder.

Abstract: An integrated acoustic detection and rock direct tensile test machine includes a support frame. A top of the support frame is provided with a top plate and a bearing plate is provided above the top plate. The bearing plate is provided with force transferring rods, lower ends of which are provided with a tensile base. A top of the tensile base is provided with a lower clamp holder and a bottom of the top plate is provided with an upper clamp holder. An upper channel is provided inside the upper clamp holder. The upper channel is provided with an acoustic transmitting probe. A lower channel is provided inside the lower clamp holder. One end of the lower channel is communicated with the outside, the other end is provided with an acoustic receiving probe. The lower channel extends to a bottom of a clamping chamber of the lower clamp holder.

Abstract: A memory device including a base semiconductor die, conductive terminals, memory dies, an insulating encapsulation and a buffer cap is provided. The conductive terminals are disposed on a first surface of the base semiconductor die. The memory dies are stacked over a second surface of the base semiconductor die, and the second surface of the base semiconductor die is opposite to the first surface of the base semiconductor die. The insulating encapsulation is disposed on the second surface of the base semiconductor die and laterally encapsulates the memory dies. The buffer cap covers the first surface of the base semiconductor die, sidewalls of the base semiconductor die and sidewalls of the insulating encapsulation. A package structure including the above- mentioned memory device is also provided.

Abstract: A power flow calculation and AC/DC hybrid power flow calculation method for a flexible DC transmission system, the method including: according to the flexible DC transmission system under different control strategies, constructing a unified power flow model with a unified structure; determining a current main converter station, a current control strategy and an initial value and a limit value thereof, and forming the power balance equations under the current control strategy according to the unified power flow model; updating the current DC node voltage according to the voltage variation obtained by solving the power balance equations, and, if the updated DC node voltage exceeds the limit value, switching the control strategy; and if the updated DC node voltage does not exceed the limit value and the iteration constraints are not satisfied, alternating the main converter station according to the priority until iteration is completed.

Abstract: A memory device including a base semiconductor die, conductive terminals, memory dies, an insulating encapsulation and a buffer cap is provided. The conductive terminals are disposed on a first surface of the base semiconductor die. The memory dies are stacked over a second surface of the base semiconductor die, and the second surface of the base semiconductor die is opposite to the first surface of the base semiconductor die. The insulating encapsulation is disposed on the second surface of the base semiconductor die and laterally encapsulates the memory dies. The buffer cap covers the first surface of the base semiconductor die, sidewalls of the base semiconductor die and sidewalls of the insulating encapsulation. A package structure including the above-mentioned memory device is also provided.

Abstract: The present disclosure relates to a voltage detection apparatus and method for determining whether a high voltage at an input terminal exceeds a preset value. The device includes a high-voltage arm and a low-voltage arm, and the low-voltage arm includes a capacitor charging/discharging module, a signal indication module, a threshold selection module, a control module, a signal transmission module, and a signal processing module.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive multiple reference signals (RSs). The UE may measure the multiple RSs to generate measurements for the multiple RSs. The UE may encode the measurements using a machine learning model to generate codewords representing a quantized version of the measurements. The UE may transmit the codewords. Numerous other aspects are described.

Abstract: An ultrasound imaging system may analyze motion of landmarks in a temporal sequence of image frames to determine mobility of one or more landmarks. In some examples, the sequence of image frames may be analyzed by one or more artificial intelligence models to detect landmarks and generate flow fields for the detected landmarks. The flow fields may be analyzed to determine the isotropy of the movement of the landmarks. The isotropy analysis may be used to generate a quantitative mobility index.

Abstract: Methods, systems, and devices for wireless communications are described. For example, the described techniques provide for performing and reporting suitable measurements, at a first user equipment (UE), on reference signals from relay UEs to determine which relay UEs to activate or deactivate for relaying communications for the first UE. The first UE may be configured to perform measurements on deactivated relay UEs, and the first UE may report these measurements (or other measurements) when one or more events are triggered. The events may depend on the measurements performed on the deactivated relay UEs. Once the events are triggered, the first UE may report the measurements, and a second UE or a network entity may use the measurements to efficiently determine which relay UEs to activate or deactivate for relaying communications for the first UE.

Abstract: An apparatus and system for determining positioning measurement accuracy are described. A UE receives positioning reference signals (PRS) from a reference cell and a neighbor cell and reference signal time difference (RSTD) measurements based on the PRS. RSTD and other PRS measurement results based on the reference and neighbor cells have RSTD and other PRS measurement accuracy requirements, that depend on bandwidth (BW), subcarrier spacing (SCS), and repetition factor of the PRS.

Abstract: Method and apparatus for enhanced inter-UE coordination. The apparatus transmits, to a second UE, an IUC request for an IUC message indicating preferred resources or non-preferred resources for transmission of a signal by a third UE. The apparatus receives, from the second UE, the IUC message indicating the preferred resources or the non-preferred resources for the transmission of the signal by the third UE. The apparatus may select transmission resources for the third UE based at least on the IUC message from the second UE indicating the preferred resources or the non-preferred resources for transmission by the third UE.