Abstract: The invention discloses a blockchain-based intrusion detection system for railway signal, which is built on a blockchain's distributed chain structure, without a central, trusted control center. This design mitigates the vulnerabilities associated with centralized intrusion detection centers. Additionally, by utilizing a blockchain-based distributed structure, it also eliminates the risk of a single point of failure for the intrusion detection center. Moreover, the data within the blockchain-based intrusion detection system is highly resistant to malicious tampering. This is achieved by leveraging the consensus mechanism inherent in the blockchain, which can achieve consensus among intrusion detection nodes. The current invention solves the internal evil attacks and avoid the inability to reach consensus between nodes due to internal evil, thereby affecting the intrusion detection performance; at the same time, the intrusion detection model can resist external network attacks.

Abstract: Skin-core structure fibers with both infrared and radar stealth, a preparation method therefor, and the use thereof are provided. The fibers are as follows: a core material of the skin-core structure fibers comprises the following raw materials in parts by weight: 10 parts of paraffin; 0.7-1.5 parts of an electromagnetic wave absorbent; and 1 part of a high-molecular polymer, wherein the electromagnetic wave absorbent is one or more of ferroferric oxide-intercalated graphene oxide, nano ferroferric oxide and carbon black, and wherein the skin-core structure fiber is obtained by spinning the core material with a skin-layer material.

Abstract: Provided in the present invention is an antibody against human CD3 or an antigen-binding fragment thereof; also provided are a nucleic acid molecule encoding the antibody, an expression vector expressing the antibody and a host cell, as well as a method for producing the antibody. In addition, also provided in the present invention are a pharmaceutical composition comprising the antibody or the antigen-binding fragment thereof, a use thereof in the preparation of a drug, and a use of the drug as a drug for the prevention and/or treatment of various diseases, including tumors, organ transplantation and autoimmune diseases.

Abstract: A low dielectric sealing glass powder for a miniature radio-frequency glass insulator is made of the following raw materials expressed in molar percentages: SiO2: 70.5-74.0%, B2O3: 20.5-23.5%, Ga2O3: 0.5-2.0%, P2O5: 0.25-2.0%, Li2O: 0.4-6.0%, K2O: 0.1-1.5%, LaB6: 0.05-1.0%, and NaCl: 0.03-0.3%. The raw material components are simple, and the preparation method is easy to implement. The dielectric constant and dielectric loss of the prepared glass powder are low, and the melting and molding temperature is low, which are convenient for large-scale industrial production. The melting and molding temperature of the low dielectric sealing glass powder ranges from 1320° C. to 1360° C., and the obtained glass has a dielectric constant ranging from 3.8 to 4.1 and a dielectric loss ranging from 4×10?4 to 10×10?4 at a frequency of 1 MHz, and a sealing temperature ranging from 900° C. to 950° C.

Abstract: A heat exchange system for heat dissipation of an electronic control assembly includes: a first heat exchange portion including a first end having a first communication port and a second end having a second communication port; a second heat exchange portion including a first end having a third communication port and a second end having a fourth communication port, and at least a part of the second heat exchange portion being configured to be in contact with the electronic control assembly; a first connection tube communicating the first communication port with the third communication port; and a second connection tube communicating the second communication port with the fourth communication port. The first and second heat exchange portions and the first and second connection tubes constitute a loop, the loop has an opening, and the opening is closed when the heat exchange system is in an operative state.

Abstract: A method for browsing an application folder includes detecting a first touch operation on a touchscreen of an electronic device, in response to the first touch operation, displaying a first user interface, where the first user interface is a setting screen of a first application program, where the first user interface includes a folder control, detecting a second touch operation on the folder control, and in response to the second touch operation, displaying a second user interface on the touchscreen, where the second user interface is a content details screen of the folder corresponding to the first application program.

Abstract: A method and device for processing a heat exchanger. The heat exchanger processing device comprises: a first assembly for placing a flat tube group, wherein the first assembly comprises a limiting portion, and the limiting portion is used for limiting the flat tube group in the first direction; and a second assembly, wherein a height direction of the first assembly is defined as a second direction, at least part of the second assembly is located above the first assembly in the second direction, and the second assembly comprises a clamping member, the clamping member for clamping a fin group; and a press-fitting member connected to the clamping member, and the press-fitting member being movable in the second direction so as to press-fit the fin group onto the flat tube group in the second direction.

Abstract: A compressor and a refrigeration system are provided. The compressor has a shell, an air cylinder assembly and a pressure relief device. The shell has a containing cavity. The air cylinder assembly is disposed in the containing cavity, and has an air suction cavity and a pressure relief channel. The pressure relief channel communicates with the air suction cavity and the containing cavity, and has a pressure relief opening. The pressure relief device is connected with the air cylinder assembly. The pressure relief device moves in the axis direction of the pressure relief channel, so as to open or close the pressure relief opening.

Abstract: Systems and methods for providing voice feedback for video conferences are provided. A computer-implemented method includes joining, by a client device, a video conference hosted by a video conference provider, the video conference having a plurality of participants using a plurality of client devices. With voice feedback enabled, the client device may receive a first audio stream from the video conference provider, the first audio stream associated with a first participant of the plurality of participants and a second audio stream from a user of the client device, the second audio stream comprising a voice of the user of the client device. The client device can play the first audio stream on one or more channels of one or more audio devices connected to the client device and play the second audio stream on the one or more channels of the one or more audio devices.

Abstract: A task processing method comprising obtaining a first identifier (ID) sequence from a logical unit number (LUN) mapping table based on logical addresses of first data, where IDs in the first ID sequence are allocated based on a sequence of physical addresses, where the LUN mapping table includes mapping relationships between the logical addresses and the IDs; obtaining first physical addresses from an ID mapping table based on one ID in the first ID sequence when the IDs in the first ID sequence are consecutive, where the ID mapping table includes a mapping relationship between an ID and a physical address and the first physical addresses are a plurality of physical addresses corresponding to the first ID sequence; and reading the first data based on the first physical addresses.

Abstract: Provided are a method and a system for bichromatic laser frequency stabilization based on differential detection of coexisting Lamb-dips and Lamb-peaks under multiple interactions. Based on multiple interactions between a multichromatic laser beam and a quantum resonance system in a Doppler-free configuration, and by setting the relative polarization directions and Raman phases between the pump and probe light which propagate in opposite directions and overlap in space, Lamb-dips and Lamb-peaks signals are generated; and by subtracting one from the other, a Doppler-free quantum resonance signal with high rejection of Doppler-broadening background and common-mode noise is obtained. The Doppler-free quantum resonance signal obtained in the present application has improved contrast and signal-to-noise ratio, and maintained narrow linewidth, making it applicable for precision spectral measurement as well as for laser frequency locking.

Abstract: The invention discloses a blockchain-based intrusion detection system for railway signal, which is built on a blockchain's distributed chain structure, without a central, trusted control center. This design mitigates the vulnerabilities associated with centralized intrusion detection centers. Additionally, by utilizing a blockchain-based distributed structure, it also eliminates the risk of a single point of failure for the intrusion detection center. Moreover, the data within the blockchain-based intrusion detection system is highly resistant to malicious tampering. This is achieved by leveraging the consensus mechanism inherent in the blockchain, which can achieve consensus among intrusion detection nodes. The current invention solves the internal evil attacks and avoid the inability to reach consensus between nodes due to internal evil, thereby affecting the intrusion detection performance; at the same time, the intrusion detection model can resist external network attacks.

Abstract: A method and associated apparatus provide for displaying, by a terminal, a first interface in response to an operation input by a user. Input by the user indicates to shrink the first interface, and display an interface including the shrunk first interface. In response to a minimization operation input by the user, a second interface is displayed on which the first interface is in a minimized state, a third minimized interface is displayed in the same way. A drop-down menu of a status bar is displayed in response to user input A multi-window display interface in response to a selection operation input by the user.

Abstract: An optical satellite remote sensing transfer calibration method based on near-space aerostat, including: performing a temporal-spatial matching between first observation image data of a target region collected by a benchmark radiometric payload and second observation image data of the target region collected by a satellite-borne payload, to obtain a plurality of matchups of observation image data (S1); obtaining an average radiance of the benchmark radiometric payload from a plurality of first observation image data (S2); obtaining an average DN captured by the satellite payload in the target region from a plurality of second observation image data (S3); obtaining a matching radiance for an observation band of the benchmark radiometric payload corresponding to the satellite payload based on the average radiance of the benchmark radiometric payload (S4); and obtaining a calibration coefficient of the satellite payload based on the matching radiance and the average DN (S5).

Abstract: A connector includes a tubular portion, a flange portion, and a first protruding portion. The tubular portion includes a first through hole and a first wall, the first wall is arranged around the first through hole, and the first wall includes a first end face that includes a first opening. The flange portion is located at an end of tubular portion in an axial direction. The flange portion includes a first side face arranged around the first wall, the flange portion further includes a second end face and a third end face which are arranged in the axial direction of the tubular portion. The first protruding portion is connected to the first wall, and the first protruding portion is located outside the first through hole in the axial direction of the tubular portion.

Abstract: An electrochemical apparatus includes a negative electrode, and the negative electrode includes a porous carbon material layer and a negative electrode active material layer, where the porous carbon material layer includes porous carbon material particles, each porous carbon material particle includes at least two types of pores among micropores, mesopores, and macropores, and the at least two types of pores communicate with each other, where a pore size of each micropore<2 nm, 2 nm?a pore size of each mesopore?50 nm, and 50 nm<a pore size of each macropore?500 nm.

Abstract: A computing node cluster provided in this embodiment of this application includes a plurality of computing nodes, and the plurality of computing nodes include an aggregation computing node. The plurality of computing nodes are configured to jointly perform a write operation on to-be-written data. Each of the plurality of computing nodes is configured to return a write success after writing partial data in the to-be-written data to a local cache. The aggregation computing node is configured to aggregate the partial data stored in caches of the plurality of computing nodes into aggregated data with consecutive addresses, and write the aggregated data into a storage node.

Abstract: The present invention relates to the fields of tire vulcanizing machines and rubber vulcanizing apparatuses, in particular to tire vulcanizing equipment, comprising a mold assembly, a ring seat assembly provided in the mold assembly, a cylinder assembly supporting the ring seat assembly, a sealing hood for sealing a gas in the mold assembly, and a driving member. A gas circulating fan is provided on the ring seat assembly; a rotating shaft for driving the gas circulating fan to rotate is provided in the cylinder assembly; the driving member drives the rotating shaft to rotate; and the sealing hood isolates the driving member, such that high-temperature and high-pressure gas in the mold assembly cannot damage the driving member, thereby increasing the service life of the driving member.

Abstract: The disclosure discloses a metal foil, a metal foil with a carrier, a copper-clad laminate and a Printed Circuit Board. Herein, a plurality of protrusions are distributed on one face of the metal foil, and the protrusions have the follow microscopic morphology: the lower half part of the protrusion connected with the one face of the metal foil is provided with a limiting part, and the diameter of a circumscribed circle of the cross section of the limiting part is smaller than the skin depth of the metal foil; and the surface area of the part of the protrusion above the limiting part is larger than the surface area of other parts of the protrusion.

Abstract: A fast calibration test system and method for a phased-array antenna, which belongs to the technical field of antenna measurement, relates to a near-field test system, and relates in particular to the fast calibration and a directional diagram test on a phased-array antenna.