Abstract: Provided are a new vertical cavity surface emitting laser structure and a manufacturing method thereof. The structure includes a substrate layer, a lower N-type DBR, an active region, an upper N-type DBR and a mixed dielectric DBR sequentially arranged from bottom to top, where a second-class tunnel junction is arranged on one side of the active region close to the upper N-type DBR, where the second-class tunnel junction is embedded in a bottom of the upper N-type DBR and surrounded by the upper N-type DBR, and the substrate layer, the lower N-type DBR, the active region, the upper N-type DBR, the mixed dielectric DBR and the second-class tunnel junction are all coaxial elliptical cylinders; negative electrodes are arranged on the lower N-type DBR, and positive electrodes are arranged on the upper N-type DBRs substrate layer.

Abstract: A holographic 3D display system based on virtual array splicing of a spatial light modulator includes a laser configured to generate a coherent light beam, first, second and third beam splitters, first and second reflectors, a shutter array, a spatial filter array, a solid lens, first and second light beam deflection elements and a spatial light modulator. The first and second beam splitters and the first reflector are configured to split the light beam generated by the laser into three parallel light beams to irradiate the shutter array. The shutter array is configured to control the three parallel light beams to sequentially pass therethrough according to a set time sequence. The three parallel light beams passing through the shutter array are expanded and collimated by the spatial filter array and the solid lens to form three parallel light beams with the same size and uniform intensity.

Abstract: The present disclosure provides modified immune cells or precursors thereof (e.g. T cells) comprising a first chimeric antigen receptor (CAR) capable of binding human IL13R?2, a second CAR capable of binding EGFR or an isoform thereof, and a dominant negative TGF? type II receptor (DN-TGF?RII). Compositions and methods of treatment are also provided.

Abstract: A holographic 3D display system based on virtual array splicing of a spatial light modulator includes a laser configured to generate a coherent light beam, first, second and third beam splitters, first and second reflectors, a shutter array, a spatial filter array, a solid lens, first and second light beam deflection elements and a spatial light modulator. The first and second beam splitters and the first reflector are configured to split the light beam generated by the laser into three parallel light beams to irradiate the shutter array. The shutter array is configured to control the three parallel light beams to sequentially pass therethrough according to a set time sequence. The three parallel light beams passing through the shutter array are expanded and collimated by the spatial filter array and the solid lens to form three parallel light beams with the same size and uniform intensity.

Abstract: A polypeptide magnetic nanoparticle, comprising: a specific targeting polypeptide and a magnetic nanoparticle. The amino acid sequence of the specific targeting polypeptide is VRRDAPRFSMQGLDA-X, and the C-terminal X thereof is a sequence of 5 to 20 amino acids. The amino acid in the amino acid sequence of C-terminal X is selected from one or more of: C, G, and N. The polypeptide magnetic nanoparticle can be used for CTC detection and molecular typing of various cancer types, including esophageal cancer, liver cancer, lung cancer, stomach cancer, bladder cancer, skin cancer, melanoma, breast cancer, colorectal cancer, cervical cancer, etc. Biomarkers of CTC molecular typing include PD-L1, HER2, ER, PR, AR, EGFR, VEGFR, CXCR4, etc. The polypeptide magnetic nanoparticle is helpful for CTC detection and the qualitative and semiquantitative analysis of expression levels of biomarkers at CTC level, thereby performing precise therapy such as targeted individualized targeted therapy or immunotherapy on patients.

Abstract: An inter-vehicle wireless payment method employing 5G communication network comprises a requesting vehicle sending a payment request to a base station; the base station retrieving vehicle information of a friend vehicle of the requesting vehicle based on the payment request; the base station encrypting request information with the vehicle information and broadcasting it; vehicles in coverage of the base station decoding broadcast information with respective vehicle information, and upon successful decoding, the friend vehicle as a responding vehicle acquiring the request information; the responding vehicle generating payment information based on the request information and sending it to the base station, the base station sending the payment information to a payment platform, and the payment platform returning a payment result to the responding vehicle; and the base station allocating a D2D communication channel to the requesting and responding vehicles, and the responding and requesting vehicles communicating

Abstract: An inter-vehicle wireless payment method employing 5G communication network comprises a requesting vehicle sending a payment request to a base station; the base station retrieving vehicle information of a friend vehicle of the requesting vehicle based on the payment request; the base station encrypting request information with the vehicle information and broadcasting it; vehicles in coverage of the base station decoding broadcast information with respective vehicle information, and upon successful decoding, the friend vehicle as a responding vehicle acquiring the request information; the responding vehicle generating payment information based on the request information and sending it to the base station, the base station sending the payment information to a payment platform, and the payment platform returning a payment result to the responding vehicle; and the base station allocating a D2D communication channel to the requesting and responding vehicles, and the responding and requesting vehicles communicating

Abstract: Provided is a method for detecting a violent incident in a video based on a hypergraph transition model, comprising a procedure of extracting a foreground target track, a procedure of establishing a hypergraph and a similarity measure, and a procedure of constructing a hypergraph transition descriptor; using the hypergraph to describe a spatial relationship of feature points, in order to reflect attitude information about a movement; and modelling the transition of correlative hypergraphs in a time sequence and extracting a feature descriptor HVC, wherein same can effectively reflect the intensity and stability of the movement. The method firstly analyses the spatial relationship of the feature points and a transition condition of a feature point group, and then performs conjoint analysis on same. The method of the present invention is sensitive to disorderly and irregular behaviours in a video, wherein same is applicable to the detection of violent incidents.

Abstract: Provided is a method for detecting a violent incident in a video based on a hypergraph transition model, comprising a procedure of extracting a foreground target track, a procedure of establishing a hypergraph and a similarity measure, and a procedure of constructing a hypergraph transition descriptor; using the hypergraph to describe a spatial relationship of feature points, in order to reflect attitude information about a movement; and modelling the transition of correlative hypergraphs in a time sequence and extracting a feature descriptor HVC, wherein same can effectively reflect the intensity and stability of the movement. The method firstly analyses the spatial relationship of the feature points and a transition condition of a feature point group, and then performs conjoint analysis on same. The method of the present invention is sensitive to disorderly and irregular behaviours in a video, wherein same is applicable to the detection of violent incidents.

Abstract: A wearable device includes a device carrier, a device core unit, a first universal serial bus (USB) interface, a second USB interface, and a signal path selection unit. The device carrier is configured to carry the device core unit, the first USB interface, the second USB interface, and the signal path selection unit of the wearable device; the device core unit is configured to perform a core function of the wearable device; the first USB interface and the second USB interface are configured to connect to an external device; the signal path selection unit is configured to control a signal path between the first USB interface and the device core unit or a signal path between the first USB interface and the second USB interface to be connected.

Abstract: A wearable device includes a device carrier, a device core unit, a first universal serial bus (USB) interface, a second USB interface, and a signal path selection unit. The device carrier is configured to carry the device core unit, the first USB interface, the second USB interface, and the signal path selection unit of the wearable device; the device core unit is configured to perform a core function of the wearable device; the first USB interface and the second USB interface are configured to connect to an external device; the signal path selection unit is configured to control a signal path between the first USB interface and the device core unit or a signal path between the first USB interface and the second USB interface to be connected.