Abstract: Disclosed are an online analysis system and method for a line loss of a transmission line. The system includes: a terminal extension and a terminal host, where time information synchronization between the terminal extension and the terminal host and between terminal extensions is performed by a clock synchronization module, and communication between the terminal extension and the terminal host and between the terminal extensions is performed by a communications module; and a line loss management platform, configured to receive measurement data of the terminal extension and the terminal host, match time information in the measurement data, and if time information in the measurement data of the terminal extension and the terminal host is matched, and time information in measurement data of the terminal extensions is matched, determine corresponding line loss information based on corresponding measurement information.

Abstract: The optical fiber disclosed has a glass fiber including a core and a cladding. The core comprises silica glass doped with chlorine and having an outer radius r1 between 3.0 microns and 10.0 microns. The cladding has an outer radius r4 not less than 50.0 microns. A primary coating surrounding the cladding has a thickness (r5?r4) between 5.0 microns and 20.0 microns, and an in situ modulus less than 0.30 MPa. A secondary coating surrounding the primary coating has a thickness (r6?r5) between 8.0 microns and 30.0 microns, a Young's modulus greater than 1500 MPa, and a normalized puncture load greater than 3.6×10?3 g/micron 2. The optical fiber has a 22-meter cable cutoff wavelength less than 1530 nm, an attenuation at 1550 nm of less than 0.17 dB/km, and a bending loss at 1550 nm of less than 3.0 dB/turn.

Abstract: An impedance matching method for a CLC branch of a low-frequency resonance suppression device is provided, which includes: establishing an equivalent circuit model for a power supply system with a low-frequency resonance suppression device joined in; obtaining, according to a target low-frequency harmonic frequency band and the equivalent circuit model, a constraint required by the power supply system for suppressing low-frequency harmonics; constructing an objective function based on a low-frequency harmonic suppression rate in a bus of the power supply system; obtaining a multi-constraint objective optimization function of CLC branch impedance based on the constraint and the objective function; and solving the multi-constraint objective optimization function through an improved harmony search algorithm to obtain an impedance parameter of the CLC branch. The present disclosure can ensure a low-frequency harmonic suppression effect for the power supply system.

Abstract: A method for extracting a kansei adjective of a product based on principal component analysis and explanation (PCA-E) includes constructing a product kansei evaluation vector matrix through original kansei adjectives; performing dimensionality reduction through PCA; and determining, based on principal component load factors, kansei adjectives representing principal components. In this way, the kansei adjectives extracted are explanatory to help users understand the selected kansei adjectives and make accurate evaluation.

Abstract: A piezoelectric artificial artery can be 3D printed to provide the real-time precise sensing of blood pressure and vessel motion patterns enabling early detection of partial occlusions. An electric-field assisted 3D printing method allows for rapid printing and simultaneously poled complex ferroelectric structures with high fidelity and good piezoelectric performance. The print material consists of ferroelectric potassium sodium niobate (KNN) particles embedded within a ferroelectric polyvinylidene fluoride (PVDF) polymer matrix.

Abstract: The present invention discloses a method for preparing bendable nanopaper-based flexible solar cells by 3D aerogel jet printing. In this method, firstly all-cellulose paper is soaked in ionic liquid, and quickly partially dissolved and regenerated under the condition of hot pressing to produce nanopaper with high transmittance and high haze; and then a 3D aerogel jet printer is used to precisely print the respective layers of a solar cell on the surface of the nanopaper as a flexible substrate material, wherein the solar cell comprises an anode PFN/Ag NWs, an active layer CuPc/C60/PTCBI/BCP and a cathode MoO3/Ag/MoO3, and the thickness of each layer is precisely controlled by setting the parameters of the 3D printer. The electrode grid line on the surface of the prepared paper flexible solar cell has a width less than 10 ?m and a thickness less than 20 nm.

Abstract: Embodiments relate to the internet of things communications field, and provide a data transmission method, device, and system, and a storage medium. The method includes: determining a first parameter, a second parameter, a first gap threshold, and a second gap threshold; determining, based on the first parameter and the first gap threshold, whether a gap exists in transmission on a downlink control channel; sending downlink control information through the downlink control channel based on a determining result; determining, based on the second parameter and the second gap threshold, whether a gap exists in transmission on a downlink data channel; and sending a transport block through the downlink data channel based on a determining result.

Abstract: Aspects of the present disclosure relate to a radar system and method of operation thereof, whereby a spectrogram is generated by processing circuitry of a radar system by converting samples, of reflections of transmitted radar signals reflected by an object in an environment of the radar system, into a time-frequency domain, determining at least one threshold based on at least one MIN-of-MAX value for magnitudes of a frequency signal of the spectrogram, generating an interference-suppressed spectrogram by removing or attenuating interference components from the spectrogram based on the at least one threshold, and generating interference-suppressed samples based on the interference-suppressed spectrogram.

Abstract: Provided in the present disclosure are an image collection method and apparatus, a terminal, and a storage medium. Provided in some embodiments of the present disclosure is an image collection method, which is used in an image collection apparatus and comprises: acquiring voice information; determining whether the voice information satisfies a first preset condition; if the voice information satisfies the first preset condition, determining the location of a target object; and according to the location of the target object, performing image capture on the target object so as to obtain an image of the target object. In the method of the present disclosure, when a target object needs to be shown to another person, the user does not need to manually operate the image collection apparatus for the other person to conveniently view the target object, thereby freeing both hands and improving convenience.

Abstract: An optical fiber is provided that includes a core region, a cladding region having a radius less than about 62.5 microns; a polymer coating comprising a high-modulus layer and a low-modulus layer, wherein a thickness of the low-modulus inner coating layer is in a range of 4 microns to 20 microns, the modulus of the low-modulus inner coating layer is less than or equal to about 0.35 MPa, a thickness of the high-modulus coating layer is in a range of 4 microns to 20 microns, the modulus of the high-modulus inner coating layer is greater than or equal to about 1.6 GPa, and wherein a puncture resistance of the optical fiber is greater than 20 g, and wherein a microbend attenuation penalty of the optical fiber is less than 0.

Abstract: The present invention provides compounds of Formula (I): or stereoisomers, tautomers, pharmaceutically acceptable salts, solvates or prodrugs thereof, wherein all the variables are as defined herein. These compounds are selective LPA receptor inhibitors.

Abstract: A drill string rotation controller includes an anti-torque balance module, a TC bearing retaining ring, an upper TC bearing, an upper thrust ball bearing, an upper Haval ring, a middle seal retaining ring, an upper mandrel, an upper shell, a rotary control cylinder, an upper spring, a spline shell, a spline sleeve, a spline mandrel, a lower shell, a spring push sleeve, a lower spring, a floating piston, a lower mandrel, a bulkhead, a lower thrust ball bearing, a lower Haval ring, a lower TC bearing, a conversion joint, an anti-drop joint, a lower joint, and a control pin. The rotary control cylinder causes the spline sleeve to switch the transmission relationship between the spline mandrel and shell. Therefore, the drill string rotation controller controls the conversion between the composite drilling mode and the directional drilling mode.

Abstract: Provided is a method for evaluating and utilizing sonnenbrand basalt aggregate, including steps as follows: mixing a basalt aggregate defined as sonnenbrand basalt into an asphalt mixture; carrying out thermal aging experiments at different temperatures and durations to obtain a theoretical trigger time ti for the sonnenbrand phenomenon under a thermal aging temperature Ti; further calculating to obtain a theoretical thermal aging factor AF0 for the sonnenbrand phenomenon; statistically calculating a thermal aging factor AF for an actual construction to evaluate a performance of the basalt aggregate, if AF<AF0, the construction may be carried out normally, if AF?AF0, then shortening the transportation and waiting duration and/or lowering the factory temperature of the asphalt mix so that the thermal aging factor AF<AF0 during actual construction.

Abstract: Provided is a method for evaluating and utilizing sonnenbrand basalt aggregate, including steps as follows: mixing a basalt aggregate defined as sonnenbrand basalt into an asphalt mixture; carrying out thermal aging experiments at different temperatures and durations to obtain a theoretical trigger time ti for the sonnenbrand phenomenon under a thermal aging temperature Ti; further calculating to obtain a theoretical thermal aging factor AF0 for the sonnenbrand phenomenon; statistically calculating a thermal aging factor AF for an actual construction to evaluate a performance of the basalt aggregate, if AF<AF0, the construction may be carried out normally, if AF?AF0, then shortening the transportation and waiting duration and/or lowering the factory temperature of the asphalt mix so that the thermal aging factor AF<AF0 during actual construction.

Abstract: The present disclosure provides a PET data compensation system and method. The method may include obtaining a count of missing data of first coincidence data. The method may also include obtaining second coincidence data and a second count of the second coincidence data, the second coincidence data and the missing data constituting the first coincidence data. The method may further include performing a compensation relating to the second coincidence data based on at least two of the count of the missing data, a first count of the first coincidence data, or the second count of the second coincidence data.

Abstract: This application provides a remote reproduction method, applied to a remote reproduction system, where the system includes a first terminal worn by a first user and a second terminal worn by a second user, and the first user and the second user are located in different geographical scenarios. The method includes: The second terminal obtains an action image of the first user, where the action image of the first user includes a sequence of at least one action formed by a pre-constructed human body model of the first user, and then the second terminal reproduces, for the second user, the action image of the first user to a geographical scenario in which the second user is located.

Abstract: A multicore optical fiber includes two or more cores, a common interior cladding surrounding the two or more cores, and a common exterior cladding surrounding the common interior cladding. The common exterior cladding has a lower relative refractive index than the common interior cladding and reduces tunneling losses from the cores. The reduced tunneling loss allows placement of cores closer to the edge of the fiber, thus providing multicore optical fibers having higher core count for a given fiber diameter. Separation between cores is controlled to minimize crosstalk.

Abstract: An adapter device enabling a peripheral component interconnect express (PCIe) slot in a server to additionally accept an open compute project (OCP) card includes a bracket assembly compatible with an OCP card and a server. The adapter device comprises a chassis, a front-end bracket, an adapter assembly, and a rail assembly. The front-end bracket defines a first inserting port for OCP card insertion, the adapter assembly comprises OCP interface, adapter circuit board, and PCIe interface. The PCIe interface is connected to the adapter circuit board, and the adapter circuit board provides electrical connection and conversion between OCP interface and PCIe interface. The rail assembly between the front-end bracket and the OCP interface carries in the OCP card when the card is inserted.

Abstract: This application discloses an apparatus for a physical uplink control channel (PUCCH) transmission. The apparatus is configured to obtain M cells that have a PUCCH transmission capability in a PUCCH group, receive, from a network device, first indication information indicating a first cell in the M cells, and receive, from the network device, second indication information indicating a time domain position of a first PUCCH. The terminal sends the first PUCCH to the network device on the first cell.