Abstract: In a blockchain system, a user device obtains an address of a smart contract according to a transaction hash, and generates a private data hash according to business data. The user device then generates a transaction based on the private data hash and the address of the smart contract, and submits the transaction to the blockchain system to store the private data hash into the smart contract, such that confidential information of a business deal in the real world is secured. An authentication device generates a private data hash according to business data, obtains an address of a smart contract in the blockchain system according to a transaction hash, and accesses the smart contract via the address to determine whether the private data hash is stored in the smart contract. The authentication device approves the business data when the smart contract includes the private data hash.

Abstract: A crowd management system includes at least one local controller associated with an attraction area of an individual attraction within a theme park. The crowd management system includes a transceiver of the at least one local controller, where the transceiver receives guests data via wireless signals from guest-associated devices within a detection range of the local controller. The crowd management system includes a remote central controller in communication with the at least one local controller and the guest-associated device. The remote central controller receives the guest data from the at least one local controller and determines one or more crowd metrics of the individual attraction based on the guest data. The remote central controller generates an activity command based on the one or more crowd metrics. The remote central controller transmits the activity command to at least one guest-associated device of the guest-associated devices.

Abstract: A crowd management system includes at least one local controller associated with an attraction area of an individual attraction within a theme park. The crowd management system includes a transceiver of the at least one local controller, where the transceiver receives guests data via wireless signals from guest-associated devices within a detection range of the local controller. The crowd management system includes a remote central controller in communication with the at least one local controller and the guest-associated device. The remote central controller receives the guest data from the at least one local controller and determines one or more crowd metrics of the individual attraction based on the guest data. The remote central controller generates an activity command based on the one or more crowd metrics. The remote central controller transmits the activity command to at least one guest-associated device of the guest-associated devices.

Abstract: In a blockchain system, a user device obtains an address of a smart contract according to a transaction hash, and generates a private data hash according to business data. The user device then generates a transaction based on the private data hash and the address of the smart contract, and submits the transaction to the blockchain system to store the private data hash into the smart contract, such that confidential information of a business deal in the real world is secured. An authentication device generates a private data hash according to business data, obtains an address of a smart contract in the blockchain system according to a transaction hash, and accesses the smart contract via the address to determine whether the private data hash is stored in the smart contract. The authentication device approves the business data when the smart contract includes the private data hash.

Abstract: A crowd management system includes at least one local controller associated with an attraction area of an individual attraction within a theme park. The crowd management system includes a transceiver of the at least one local controller, where the transceiver receives guests data via wireless signals from guest-associated devices within a detection range of the local controller. The crowd management system includes a remote central controller in communication with the at least one local controller and the guest-associated device. The remote central controller receives the guest data from the at least one local controller and determines one or more crowd metrics of the individual attraction based on the guest data. The remote central controller generates an activity command based on the one or more crowd metrics. The remote central controller transmits the activity command to at least one guest-associated device of the guest-associated devices.

Abstract: A crowd management system includes at least one local controller associated with an attraction area of an individual attraction within a theme park. The crowd management system includes a transceiver of the at least one local controller, where the transceiver receives guests data via wireless signals from guest-associated devices within a detection range of the local controller. The crowd management system includes a remote central controller in communication with the at least one local controller and the guest-associated device. The remote central controller receives the guest data from the at least one local controller and determines one or more crowd metrics of the individual attraction based on the guest data. The remote central controller generates an activity command based on the one or more crowd metrics. The remote central controller transmits the activity command to at least one guest-associated device of the guest-associated devices.

Abstract: A photoionization detector is disclosed. The photoionization detector comprises a detector electrode that outputs a signal, an ultraviolet lamp, a lamp driver communicatively coupled to the ultraviolet lamp and configured to turn the ultraviolet lamp on and off in response to a control input, and a controller that is communicatively coupled to the output signal of the detector electrode and to the control input of the lamp driver, that outputs an indication of gas detection based on the output signal of the detector electrode, and that turns the lamp driver on and off with an on duty cycle of less than 10%.

Abstract: A crowd management system includes at least one local controller associated with an attraction area of an individual attraction within a theme park. The crowd management system includes a transceiver of the at least one local controller, where the transceiver receives guests data via wireless signals from guest-associated devices within a detection range of the local controller. The crowd management system includes a remote central controller in communication with the at least one local controller and the guest-associated device. The remote central controller receives the guest data from the at least one local controller and determines one or more crowd metrics of the individual attraction based on the guest data. The remote central controller generates an activity command based on the one or more crowd metrics. The remote central controller transmits the activity command to at least one guest-associated device of the guest-associated devices.

Abstract: A crowd management system includes at least one local controller associated with an attraction area of an individual attraction within a theme park. The crowd management system includes a transceiver of the at least one local controller, where the transceiver receives guests data via wireless signals from guest-associated devices within a detection range of the local controller. The crowd management system includes a remote central controller in communication with the at least one local controller and the guest-associated device. The remote central controller receives the guest data from the at least one local controller and determines one or more crowd metrics of the individual attraction based on the guest data. The remote central controller generates an activity command based on the one or more crowd metrics. The remote central controller transmits the activity command to at least one guest-associated device of the guest-associated devices.

Abstract: A mixed reality viewing system includes a viewer configured to be secured to a steady platform and operable by a user to view a theme through the viewer. The viewer includes a display device, a user interface comprising a zoom control, and at least one sensor comprising at least one camera. The mixed reality viewing system also includes a computer graphics generation system communicatively coupled to the viewer. The computer graphics generation system is configured to generate streaming media of a real world environment based on image data captured via the at least one camera of the viewer, generate augmented reality graphics, virtual reality graphics, or both, superimposed on the streaming media of the real world environment, and transmit the streaming media of the real world environment along with the superimposed augmented reality graphics, virtual reality graphics, or both, to be displayed on the display device of the viewer.

Abstract: A photoionization detector is disclosed. The photoionization detector comprises a detector electrode that outputs a signal, an ultraviolet lamp, a lamp driver communicatively coupled to the ultraviolet lamp and configured to turn the ultraviolet lamp on and off in response to a control input, and a controller that is communicatively coupled to the output signal of the detector electrode and to the control input of the lamp driver, that outputs an indication of gas detection based on the output signal of the detector electrode, and that turns the lamp driver on and off with an on duty cycle of less than 10%.

Abstract: A crowd management system includes at least one local controller associated with an attraction area of an individual attraction within a theme park. The crowd management system includes a transceiver of the at least one local controller, where the transceiver receives guests data via wireless signals from guest-associated devices within a detection range of the local controller. The crowd management system includes a remote central controller in communication with the at least one local controller and the guest-associated device. The remote central controller receives the guest data from the at least one local controller and determines one or more crowd metrics of the individual attraction based on the guest data. The remote central controller generates an activity command based on the one or more crowd metrics. The remote central controller transmits the activity command to at least one guest-associated device of the guest-associated devices.

Abstract: A mixed reality viewing system includes a viewer configured to be secured to a steady platform and operable by a user to view a theme through the viewer. The viewer includes a display device, a user interface comprising a zoom control, and at least one sensor comprising at least one camera. The mixed reality viewing system also includes a computer graphics generation system communicatively coupled to the viewer. The computer graphics generation system is configured to generate streaming media of a real world environment based on image data captured via the at least one camera of the viewer, generate augmented reality graphics, virtual reality graphics, or both, superimposed on the streaming media of the real world environment, and transmit the streaming media of the real world environment along with the superimposed augmented reality graphics, virtual reality graphics, or both, to be displayed on the display device of the viewer.

Abstract: A social graph may be modeled as a collection of claims. Each claim is associated with an author, an audience, and an assertion about a fact. Probabilistic information may be collected from various sources for a claim, enabling a social networking system to evaluate a truthfulness of the assertion made in the claim. User-declared profile information may be evaluated as claims. A user, entity, or application may make claims about any assertions made in the social networking system. Reputation scores may be determined for users based on evaluations of their historical assertions. Claims may be evaluated for truthfulness using a probabilistic prediction model using heuristics analysis, regression analysis, and machine learning methods. A claims-based profile of users may be provided to viewers based on the contexts in which the claims were made. Viewers may view claims made about users, such as the users' biographical information, contact information, expertise, and interests.