Abstract: A base station and wireless device are configured to support TDD operation. In exemplary embodiments, the base station or UE can make use of the available symbols in the DwPTS or UpPTS of a special subframe respectively for NB-IoT transmissions. In one example, the base station can use OFDM symbols in the DwPTS to repeat in a predetermined manner some of the symbols transmitted in an immediately preceding downlink subframe, or in a succeeding downlink subframe. In other embodiments, the UE can use symbols in the UpPTS to repeat in a predetermined manner some of the symbols transmitted in the immediately succeeding uplink subframe, or in a preceding uplink subframe. The symbols repeated in the special subframe can be coherently combined at the receiver with corresponding symbols transmitted in a downlink or uplink subframe to improve decoding performance, reduce errors, improve channel estimation, and increase system capacity.

Abstract: The present application belongs to the technical field of solar cells, and relates to a p-type bifacial solar cell with partial rear surface field passivation and a preparation method therefor. The solar cell includes a p-type silicon substrate. At the bottom portion of the p-type silicon substrate are arranged, from top to bottom, a silicon oxide passivation layer, an aluminum oxide passivation layer and a rear side silicon nitride anti-reflection layer. A plurality of boron source-doped layers are embedded in the bottom portion of the p-type silicon substrate. Connected to the bottom of each of the boron source-doped layers is a rear side metal electrode layer, which penetrates each of the silicon oxide passivation layer, the aluminum oxide passivation layer and the rear side silicon nitride anti-reflection layer.

Abstract: Model training systems collaborate on model training without revealing respective private data sets. Each private data set learns a set of client weights for a set of computer models that are also learned during training. Inference for a particular private data set is determined as a mixture of the computer model parameters according to the client weights. During training, at each iteration, the client weights are updated in one step based on how well sampled models represent the private data set. In another step, gradients are determined for each sampled model and may be weighed according to the client weight for that model, relatively increasing the gradient contribution of a private data set for model parameters that correspond more highly to that private data set.

Abstract: A sensor adjustment method includes obtaining a folding status parameter, where the folding status parameter is used to describe a folding extent of a foldable device, and where a component of the foldable device in a folded state causes interference to a first sensor of the foldable device compared with a non-folded state; invoking a sensor adjustment corresponding to the folding status parameter; and adjusting a sensor operating parameter of the first sensor according to the sensor adjustment and/or performing data preprocessing on first sensor data collected by the first sensor.

Abstract: Described here are systems and methods for a robust magnetic resonance elastography (“MRE”) imaging platform for rapid dynamic 3D MRE imaging. The imaging platform includes an MRE pulse sequence and advanced image reconstruction framework that work synergistically in order to greatly expand the domains where MRE can be deployed successfully.

Abstract: Nyquist ghost artifacts in echo planar imaging (“EPI”) are mitigated, reduced, or otherwise eliminated by implementing robust Nyquist ghost correction (“NGC”) directly from two reversed readout EPI acquisitions. As one advantage, these techniques do not require explicit reference scanning A model-based process is used for directly estimating statistically optimal NGC coefficients from multi-channel k-space data.

Abstract: A method includes obtaining an average radio frequency exposure value over a target time window, where the target time window is a standard time window, determining a power threshold corresponding to the average radio frequency exposure value, where the power threshold is a preset power value corresponding to a preset value range to which the average radio frequency exposure value belongs, and controlling a transmit power of the wireless device based on the power threshold over a controlled time window.

Abstract: A transmit power control method includes obtaining an uplink-downlink configuration (uplink (UL)/downlink (DL) assignment) from a network side and determining a power decrease that can be reduced in the uplink-downlink configuration compared with that in an all-uplink configuration when and uplink time proportion configured in the uplink-downlink configuration is not 100% and the uplink-downlink configuration is not the all-uplink configuration.

Abstract: Described here are systems and methods for evaluating the extent of brain-skull tethering, which may also be referred to as loss of trabecular reserve, in subjects using magnetic resonance elastography (“MRE”). The present disclosure describes a method for assessing progressive damage to arachnoid space (“SAS”) trabeculae. The method generally includes measuring the relative movement between the brain and the skull using MRE. As one example, an MRE-based method named slip interface imaging (“SII”) can be implemented. By measuring trabecular reserve in subjects who have a history of prior head trauma, the susceptibility of a given subject to future injury can be assessed.

Abstract: Described here are systems and methods for evaluating the extent of brain-skull tethering, which may also be referred to as loss of trabecular reserve, in subjects using magnetic resonance elastography (“MRE”). The present disclosure describes a method for assessing progressive damage to arachnoid space (“SAS”) trabeculae. The method generally includes measuring the relative movement between the brain and the skull using MRE. As one example, an MRE-based method named slip interface imaging (“SII”) can be implemented. By measuring trabecular reserve in subjects who have a history of prior head trauma, the susceptibility of a given subject to future injury can be assessed.

Abstract: Representative methods and systems are disclosed for reducing image distortion or increasing spatial resolution in echo planar magnetic resonance imaging. In representative embodiments, a targeted field of view (FOV) image is divided into segments, with each segment having a predetermined overlap region with an adjacent segment, such as in a phase-encoding direction. Image data is acquired for each segment, sequentially or simultaneously, using a reduced phase-encoding FOV with a 2D radiofrequency (RF) excitation pulse, and rotated and scaled magnetic field gradients. The 2D RF excitation pulse may also be modulated, such as onto a plurality of different carrier frequencies, for simultaneous acquisition of multiple segments in the same imaging plane. Using the spatial response of the 2D RF excitation pulse, the acquired image data for each segment of the plurality of segments is combined to generate a combined magnetic resonance image having the targeted field of view.

Abstract: Representative methods and systems are disclosed for reducing image distortion or increasing spatial resolution in echo planar magnetic resonance imaging. In representative embodiments, a targeted field of view (FOV) image is divided into segments, with each segment having a predetermined overlap region with an adjacent segment, such as in a phase-encoding direction. Image data is acquired for each segment, sequentially or simultaneously, using a reduced phase-encoding FOV with a 2D radiofrequency (RF) excitation pulse, and rotated and scaled magnetic field gradients. The 2D RF excitation pulse may also be modulated, such as onto a plurality of different carrier frequencies, for simultaneous acquisition of multiple segments in the same imaging plane. Using the spatial response of the 2D RF excitation pulse, the acquired image data for each segment of the plurality of segments is combined to generate a combined magnetic resonance image having the targeted field of view.

Abstract: Described are fabric care pellets comprising an amphiphilic polymer, preferably an ethylene acrylic acid copolymer, a surfactant, and a filler, wherein the pellet contains 30 wt % to 90 wt % amphiphilic polymer, preferably ethylene acrylic acid copolymer, and methods of making and using the same.

Abstract: Technologies are described herein for generating a suite of web tests that are then combined into a load test. A log file is received. The log file may contain one or more requests received at a web server. Relevant information is extracted from the log file into a data file. A web test template is retrieved. The web test template is populated with the relevant information from the data file to generate the web test.

Abstract: Technologies are described herein for generating a suite of web tests that are then combined into a load test. A log file is received. The log file may contain one or more requests received at a web server. Relevant information is extracted from the log file into a data file. A web test template is retrieved. The web test template is populated with the relevant information from the data file to generate the web test.

Abstract: The invention provides a type of artemisinin derivatives having following structure I, its preparation method and use, as well as a pharmaceutical composition containing such artemisinin derivatives and its use. The arteminsinin derivatives of the present invention and their pharmaceutical composition containing the artemisinin derivatives. have immunosuppressive activities and can be used more safely. The composition which comprises the artemisinin derivatives can be formulated into long-term dosage forms such as tablet, pellet and the like, and have wider productive and use value.

Abstract: A log file may include a line corresponding to a request received at a web server. A rules file may include rules that are applied in a specified order. The rules may include a first rule associated with a first request identifier and a second rule associated with a second request identifier. A determination is made as to whether the line matches the first rule. If the line matches the first rule, then identification data is updated to associate the first request identifier with the line. If the line does not match the first rule, then a determination is made as to whether the line matches the second rule. If the line matches the second rule, then the identification data is updated to associate the second request identifier with the line.

Abstract: The invention provides a type of artemisinin derivatives having following structure I, its preparation method and use, as well as a pharmaceutical composition containing such artemisinin derivatives and its use. The artemisinin derivatives of the present invention and their pharmaceutical composition containing the artemisinin derivatives. have immunosuppressive activities and can be used more safely. The composition which comprises the artemisinin derivatives can be formulated into long-term dosage forms such as tablet, pellet and the like, and have wider productive and use value.

Abstract: A cleaning apparatus is disclosed to include a housing, a conical receptacle fixedly provided inside the housing for holding an umbrella in an inverted and partially opened condition, a vacuum pump fixedly mounted inside the housing and connected to the conical receptacle for producing a negative pressure to suck in dust and water from the inserted umbrella in the conical receptacle, and a hot air blower installed in the housing for flowing hot current of air into the inside of the conical receptacle to dry the inserted umbrella.