Abstract: A multi-parallel carbon dioxide heat pump control method based on target load control, wherein the multi-parallel carbon dioxide heat pump comprises a carbon dioxide circulation loop, a heat source pipeline and a hot water pipeline, and the control method comprises: adjusting the opening degree of an electronic expansion valve (3) according to the temperature of an inlet of the hot water pipeline, the temperature of an outlet of the hot water pipeline, the flow in the hot water pipeline and a target outlet temperature set by a user, such that the steady-state change of system pressure can be realized by adjusting the electronic expansion valve (3) on the basis of the fluctuation of parameters such as user side temperature and flow, thus a target outlet temperature change curve is rapidly and stably converged to a target value, and the outlet temperature can be rapidly stabilized.

Abstract: An electronic device is provided. The electronic device includes a first circuit structure, a second circuit structure, a conductive layer, and a supporting structure. The conductive layer is disposed between the first circuit structure and the second circuit structure.

Abstract: A biomimetic turtle includes a trunk, a head movably connected with a front end of the trunk in the front-rear direction, two front limbs disposed on a front section of the trunk and each rotatable relative to the trunk to sway in an up-down direction, and a driving module to drive the head and the front limbs. Each front limb has a curve-shaped rigid portion with a recess, and a deformable flipper portion engaged in the recess and extending rearwardly. With the deformable flipper portion deformed and bent during swaying of the front limbs, a forward propelling force is generated to propel the biomimetic turtle forwardly. The head is operably movable to vary the center of gravity of 10 the biomimetic turtle 100 in the water, and thus the front portion of the biomimetic turtle is inclined upwardly or downwardly to facilitate ascending or descending of the biomimetic turtle.

Abstract: A capacity adjustment method applied to a storage system and a related apparatus are provided. The method includes: analyzing cold and hot attributes of data stored in the storage system, to obtain an amount of hot data and an amount of cold data in the data; determining, based on the amount of hot data and the amount of cold data, a capacity of a cache required by the storage system and a capacity of a persistent storage required by the storage system, where the cache required by the storage system comes from a first storage medium set, and the persistent storage required by the storage system comes from a second storage medium set; and adjusting, based on the capacity of the cache and the capacity of the persistent storage, a purpose of a storage medium comprised in the storage system.

Abstract: This application provides example data processing methods and systems. One example data processing method includes obtaining a first metadata stream of a first file system, where the first metadata stream is a streaming structure and includes multiple records, and each of the multiple records includes an identifier of a node in the first file system, an identifier of a parent node of the node, and an attribute of the node. A hierarchy of multiple nodes in the first file system is determined based on the first metadata stream.

Abstract: This disclosure describes techniques to concurrently capture several redundant (e.g., overlapping) video image streams on electronic devices having multiple image capture devices (e.g., on mobile devices having two or more digital video cameras). The techniques described herein advantageously capture at least one “compressed” video image stream, such that the overall multi-video image stream capture process uses significantly less power than capturing each stream independently in an “uncompressed” fashion. These techniques provide an electronic device with the ability to provide a user with more video streams that are of a higher frame rate and/or higher quality for a longer capture time-without exceeding the device's thermal limits.

Abstract: Techniques pertaining to power saving by data throughput pattern prediction in wireless communications are described. A user equipment (UE) determines whether a probability of a first value being greater than a second value is higher than a threshold. The UE triggers a radio resource control (RRC) connection release with a network responsive to the probability being higher than the threshold. The first value represents a succeeding continuous duration of no uplink (UL) and downlink (DL) data. The second value represents an RRC inactivity timer duration plus a threshold duration.

Abstract: A biomimetic waterfowl includes a housing, two waterfowl legs, and a driving module. The waterfowl legs are spaced apart from each other in a left-right direction and are mounted to a bottom portion of the housing. Each waterfowl leg includes a first segment mounted to the housing and rotatable about a first axis parallel to the left-right direction, and a second segment rotatable about a second axis parallel to the first axis. The driving module is mounted to the housing and is configured to drive the waterfowl legs. Each of the waterfowl legs is movable between a retracted state, where the first segment extends forwardly from the housing and the second segment extends rearwardly from the first segment, and a propelling state, where the first segment extends rearwardly from the housing and the second segment extends rearwardly from the first segment.

Abstract: In one implementation, a method includes receiving a warped image representing simulated reality (SR) content (e.g., to be displayed in a display space), the warped image having a plurality of pixels at respective locations uniformly spaced in a grid pattern in a warped space, wherein the plurality of pixels are respectively associated with a plurality of respective pixel values and a plurality of respective scaling factors indicating a plurality of respective resolutions at a plurality of respective locations of the SR content (e.g., in the display space). The method includes processing the warped image in the warped space based on the plurality of respective scaling factors to generate a processed warped image and transmitting the processed warped image.

Abstract: A method of designing a passive metasurface system within an environment includes receiving a three-dimensional model of the environment including one or more transmitter locations and one or more target locations, and determining one or more metasurface designs and placements to achieve a given objective. The method may also include computing a received signal strength at the one or more target locations based on the three-dimensional model of the environment, computing the received signal strength at the one or more target locations based on the three-dimensional model of the environment and the one or more metasurface designs and placements, and/or calculating ray traces and/or using machine learning to determine the received signal strength at the one or more target locations on the three-dimensional model of the environment and the one or more metasurface designs and placements.

Abstract: A carbon dioxide overlapping type heating system and a control method therefor, in which the heating system includes a low-temperature-stage loop, high-temperature-stage loop and a heating loop, in which a temperature-stage compressor (3) and a high-temperature-stage compressor (7) are both variable-frequency compressors; and a water pump (10) is a variable-frequency water pump.

Abstract: A package structure is provided. The package structure includes a wiring structure, a first element, and a plurality of first wires. The wiring structure has a first recess recessed from a first surface of the wiring structure. The first element is disposed over the first surface of the wiring structure. The first wires are disposed in the first recess and extending in a direction from the wiring structure to the first element. The first wires are configured to reduce an inclination of the first element with respect to the first surface of the wiring structure.

Abstract: A mixed reality system that includes a device and a base station that communicate via a wireless connection The device may include sensors that collect information about the user's environment and about the user. The information collected by the sensors may be transmitted to the base station via the wireless connection. The base station renders frames or slices based at least in part on the sensor information received from the device, encodes the frames or slices, and transmits the compressed frames or slices to the device for decoding and display. The base station may provide more computing power than conventional stand-alone systems, and the wireless connection does not tether the device to the base station as in conventional tethered systems. The system may implement methods and apparatus to maintain a target frame rate through the wireless link and to minimize latency in frame rendering, transmittal, and display.

Abstract: Provided are a GLP-1 receptor agonist compound and a composition and use thereof. The compound can be used for treating or preventing GLP-1 receptor-mediated diseases or disorders and related diseases or disorders.

Abstract: In one implementation, a method includes receiving a warped image representing simulated reality (SR) content (e.g., to be displayed in a display space), the warped image having a plurality of pixels at respective locations uniformly spaced in a grid pattern in a warped space, wherein the plurality of pixels are respectively associated with a plurality of respective pixel values and a plurality of respective scaling factors indicating a plurality of respective resolutions at a plurality of respective locations of the SR content (e.g., in the display space). The method includes processing the warped image in the warped space based on the plurality of respective scaling factors to generate a processed warped image and transmitting the processed warped image.

Abstract: A hot water system with transcritical carbon dioxide single-stage or double-stage compression and a control method therefor is provided. The hot water system includes a first-stage compressor, a first heat exchanger for exchanging heat with cooling water on user side, a second-stage compressor, a second heat exchanger for exchanging heat with the cooling water on user side, a third heat exchanger for exchanging heat between a liquid phase refrigerant and a gas phase refrigerant, an expansion valve, a fourth heat exchanger for exchanging heat with ambient air, a buffer water tank, a first proportional valve, a second proportional valve, a third proportional valve, a fourth proportional valve, a defrosting valve, and a refrigerant circuit bypass valve. The hot water system can switch between the single-stage compression ad the double-stage compression in high-temperature and low-temperature weather, ensuring that the system has good heating capacity and energy efficiency ratio.

Abstract: A method jointly optimizes a passive metasurface and a multiple input multiple output (MIMO) antenna array to achieve dynamic adaptation and high RSS. The passive metasurface consists of one or more conductive layers and dielectric layers. The metasurface supports dual band communication. For the uplink, the outgoing signals is generated by jointly optimizing antenna array and metasurface design. For the downlink, the designed metasurface is used together with incident-angle-insensitive meta cells to effectively combine arriving signals at the receiving antennas from all incident angles.

Abstract: A maximum power point tracking device and an operation method thereof are provided. The maximum power point tracking device includes a DC-to-DC converting circuit, a DC-to-AC inverting circuit, a controlling circuit, an auxiliary power supply and a power limiting circuit. The auxiliary power supply is connected to the DC-to-DC converting circuit, the DC-to-AC inverting circuit and the controlling circuit to provide power. The power limiting circuit is connected to a photovoltaic array and the auxiliary power supply. The power limiting circuit includes a dummy load path and an auxiliary power providing path. The dummy load path is used to provide a dummy load, when a photovoltaic power of the photovoltaic array is lower than a predetermined power. The auxiliary power providing path is used for providing the auxiliary power when the photovoltaic power of the photovoltaic array is higher than or equal to the predetermined power.

Abstract: A mixed reality system that includes a device and a base station that communicate via a wireless connection The device may include sensors that collect information about the user's environment and about the user. The information collected by the sensors may be transmitted to the base station via the wireless connection. The base station renders frames or slices based at least in part on the sensor information received from the device, encodes the frames or slices, and transmits the compressed frames or slices to the device for decoding and display. The base station may provide more computing power than conventional stand-alone systems, and the wireless connection does not tether the device to the base station as in conventional tethered systems. The system may implement methods and apparatus to maintain a target frame rate through the wireless link and to minimize latency in frame rendering, transmittal, and display.

Abstract: A video encoding system in which pixel data is decomposed into frequency bands prior to encoding. The frequency bands for a slice of a frame may be buffered so that complexity statistics may be calculated across the frequency bands prior to encoding. The statistics may then be used by a rate control component in determining quantization parameters for the frequency bands for modulating the rate in the encoder for the current slice. The quantization parameters for the frequency bands may be calculated jointly to optimize the quality of the displayed frames after decoder reconstruction and wavelet synthesis on a receiving device. Information about one or more previously processed frames may be used in combination with the statistics for a current slice in determining the quantization parameters for the current slice.