Abstract: This specification describes techniques for processing service requests. One example method includes receiving an electronic credential request from a client, retrieving an electronic credential that corresponds to the user identifier, generating server signature information, and transmitting the server signature information and the electronic credential to the client. The server signature information includes the electronic credential and a user public key of the client. The electronic credential and the user public are signed using a server private key. The server signature information is configured to be cryptographically verified by the client and configured to enable the client to generate a two-dimensional barcode based on the electronic credential. The electronic credential included in the two-dimensional barcode is configured to be verified by a credential verification device. The credential verification end device is configured to generate the electronic credential based on the user identifier.

Abstract: The present application discloses example methods and systems. In one example method, sound wave information associated with a data transmission is monitored within a predetermined distance from the client device, where the sound wave information including predetermined security information. In response to detecting sound wave information associated with a data transmission, the sound wave information is parsed to obtain the predetermined security information included in the detected sound wave information. Pattern information is generated based on the predetermined security information and data information to be sent. The generated pattern information is then displayed so that a second device can obtain the generated pattern information.

Abstract: Aspects of the present disclosure include methods that include co-culturing a cell and a microparticle that includes a capture ligand, in a culture medium under conditions in which a biomarker produced by the cell is bound by the capture ligand. Such methods may further include detecting (e.g., by flow or mass cytometry) complexes that include the microparticle, the capture ligand, the biomarker, and a detection reagent. The methods may further include determining the proportion or number of cells among a heterogeneous cell population that produced the biomarker and/or the level of biomarker secreted by such cells. Compositions, systems and kits are also provided.

Abstract: A client device obtains and records inbound station information. The client device sends first electronic credential information to an inbound charging apparatus, where the first electronic credential information comprises authentication information generated by a payment system based on a user identity in the client device. The client device sends second electronic credential information and the inbound station information to an outbound charging apparatus, where the second electronic credential information comprises authentication information generated by the payment system based on the user identity in the client device.

Abstract: The present application discloses example methods and systems. In one example method, sound wave information associated with a data transmission is monitored within a predetermined distance from the client device, where the sound wave information including predetermined security information. In response to detecting sound wave information associated with a data transmission, the sound wave information is parsed to obtain the predetermined security information included in the detected sound wave information. Pattern information is generated based on the predetermined security information and data information to be sent. The generated pattern information is then displayed so that a second device can obtain the generated pattern information.

Abstract: Provided are methods for determining the presence or absence of donor specific antibodies in a biological sample. The methods include mixing a cellular sample from a donor with a biological sample from a recipient under conditions sufficient for recipient immune antibodies, if present, to bind to donor cell surface antigen (Ag) to form an immune antibody-Ag complex, contacting the mixture with beads comprising an antibody that specifically binds the immune antibody-Ag complex (e.g., the Ag or immune antibody) on a surface thereof, adding under lysis conditions a detectably-labeled antibody that specifically binds the immune antibody-Ag complex bound to the beads, and detecting the presence or absence of the detectably-labeled antibody bound to the immune antibody-Ag complex to determine the presence or absence of donor specific antibodies in the biological sample from the recipient. Systems and kits for practicing the subject methods are also provided.

Abstract: This specification describes techniques for processing service requests. One example method includes receiving an electronic credential request from a client, retrieving an electronic credential that corresponds to the user identifier, generating server signature information, and transmitting the server signature information and the electronic credential to the client. The server signature information includes the electronic credential and a user public key of the client. The electronic credential and the user public key are signed using a server private key. The server signature information is configured to be cryptographically verified by the client and configured to enable the client to generate a two-dimensional barcode based on the electronic credential. The electronic credential included in the two-dimensional barcode is configured to be verified by a credential verification device. The credential verification end device is configured to generate the electronic credential based on the user identifier.

Abstract: An article support device has a pair of support platforms arranged symmetrically and opposite to each other. Each of the support platforms includes a support frame, a support plate disposed on a top of the support frame and having a horizontal support top surface, and at least one positioning block installed on the horizontal support top surface. The horizontal support top surfaces of the support plates are located at a same height position. The article is supported on the horizontal support top surfaces and positioned between the positioning blocks on the support plates. An accommodation space is defined between the support plates and the support frames, and an automated guided vehicle moves into the accommodation space. An article carried on the article support device is loadable onto the automatic guided vehicle or the article carried on the automatic guided vehicle is unloadable onto the article support device.

Abstract: A target user directing method and apparatus and provided. The method includes determining a similarity between each of candidate users and a seed user by using a similarity model. A conversion prediction model is used to predict a probability that each of the candidate users performs a conversion operation on to-be-delivered information. One or more target users for the to-be-delivered information are selected from the candidate users according to the similarity that is determined and the probability that is predicted for each of the candidate users. The to-be-delivered information is transmitted to the one or more target users.

Abstract: A client device obtains and records inbound station information. The client device sends first electronic credential information to an inbound charging apparatus, where the first electronic credential information comprises authentication information generated by a payment system based on a user identity in the client device. The client device sends second electronic credential information and the inbound station information to an outbound charging apparatus, where the second electronic credential information comprises authentication information generated by the payment system based on the user identity in the client device.

Abstract: A digital object identifier (DOI) display request is received. A service type of a service corresponding to the display request is determined. Basic user information of a first user and identity type information corresponding to the service type is determined based on the service type and stored calibration information, where the identity type information is pre-authenticated to ensure validity based on a validity period associated with the identity type information. A DOI of the first user is generated based on the basic user information and the identity type information. The DOI is displayed for a second user to perform service processing based on the basic user information and the identity type information in the DOI.

Abstract: A digital object identifier (DOI) display request is received. A service type of a service corresponding to the display request is determined. Basic user information of a first user and identity type information corresponding to the service type is determined based on the service type and stored calibration information, where the identity type information is pre-authenticated to ensure validity based on a validity period associated with the identity type information. A DOI of the first user is generated based on the basic user information and the identity type information. The DOI is displayed for a second user to perform service processing based on the basic user information and the identity type information in the DOI.

Abstract: The specification discloses a dynamic graphic code implementation method and apparatus. The method includes: invoking a distance sensor to detect a distance between a device and a blocking object when displaying a graphic code; and if the distance is within a preset distance range, stopping refreshing the graphic code.

Abstract: This specification describes techniques for processing service requests. One example method includes receiving an electronic credential request from a client, retrieving an electronic credential that corresponds to the user identifier, generating server signature information, and transmitting the server signature information and the electronic credential to the client. The server signature information includes the electronic credential and a user public key of the client. The electronic credential and the user public are signed using a server private key. The server signature information is configured to be cryptographically verified by the client and configured to enable the client to generate a two-dimensional barcode based on the electronic credential. The electronic credential included in the two-dimensional barcode is configured to be verified by a credential verification device. The credential verification end device is configured to generate the electronic credential based on the user identifier.

Abstract: Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for data synchronization. One of the methods includes that a first terminal device establishes a data channel to a specified carrier through near field communication. The first terminal device obtains an account identifier of a first account and first streaming data corresponding to the first account through the data channel, where the account identifier of the first account and the first streaming data are stored in the specified carrier. The first terminal device determines second streaming data corresponding to a second account associated with the first account, and performs data synchronization between the first account and the second account based on the first streaming data and the second streaming data.

Abstract: A digital object identifier (DOI) display request is received. A service type of a service corresponding to the display request is determined. Basic user information of a first user and identity type information corresponding to the service type is determined based on the service type and stored calibration information, where the identity type information is pre-authenticated to ensure validity based on a validity period associated with the identity type information. A DOI of the first user is generated based on the basic user information and the identity type information. The DOI is displayed for a second user to perform service processing based on the basic user information and the identity type information in the DOI.

Abstract: A virtual card opening method and system, a payment system, and a card issuing system are disclosed. The method comprises: receiving, through an online traffic entrance associated with a payment system, a virtual card opening request from a user, the virtual card opening request comprising user information and type identifier information of a virtual card; searching, by the payment system, for a rule for acting as an agent to open a card and a card opening condition corresponding to the type identifier information from the payment system, the rule for acting as an agent to open a card and the card opening condition being obtained in advance by the payment system from a card issuing system; and generating, by the payment system, a target virtual card according to the user information and the rule for acting as an agent.

Abstract: A digital object identifier (DOI) display request is received. A service type of a service corresponding to the display request is determined. Basic user information of a first user and identity type information corresponding to the service type is determined based on the service type and stored calibration information, where the identity type information is pre-authenticated to ensure validity based on a validity period associated with the identity type information. A DOI of the first user is generated based on the basic user information and the identity type information. The DOI is displayed for a second user to perform service processing based on the basic user information and the identity type information in the DOI.

Abstract: A digital object identifier (DOI) display request is received. A service type of a service corresponding to the display request is determined. Basic user information of a first user and identity type information corresponding to the service type is determined based on the service type and stored calibration information, where the identity type information is pre-authenticated to ensure validity based on a validity period associated with the identity type information. A DOI of the first user is generated based on the basic user information and the identity type information. The DOI is displayed for a second user to perform service processing based on the basic user information and the identity type information in the DOI.

Abstract: Aspects of the present disclosure include methods that include co-culturing a cell and a microparticle that includes a capture ligand, in a culture medium under conditions in which a biomarker produced by the cell is bound by the capture ligand. Such methods may further include detecting (e.g., by flow or mass cytometry) complexes that include the microparticle, the capture ligand, the biomarker, and a detection reagent. The methods may further include determining the proportion or number of cells among a heterogeneous cell population that produced the biomarker and/or the level of biomarker secreted by such cells. Compositions, systems and kits are also provided.