Abstract: Systems and methods for generating pseudo haptic feedback for a virtual widget are disclosed. The method includes computing, from a force profile of the virtual widget, a virtual displacement value based on a force value and a type of the virtual widget. The force profile describes a user's perception of physical characteristics of the virtual widget. The method generates a visual haptic feedback based on the virtual displacement value and the type of the virtual widget. Further, in response to the force value, the method may display on a display screen the visual haptic feedback.

Abstract: Systems and methods for generating pseudo haptic feedback for a virtual widget are disclosed. The method includes computing, from a force profile of the virtual widget, a virtual displacement value based on a force value and a type of the virtual widget. The force profile describes a user's perception of physical characteristics of the virtual widget. The method generates a visual haptic feedback based on the virtual displacement value and the type of the virtual widget. Further, in response to the force value, the method may display on a display screen the visual haptic feedback.

Abstract: A distributed database transaction processing method and device based on a GPS atomic clock, the method includes: receiving a plurality of transaction requests by the first node server; determining a concurrency conflict between transaction requests received by the first node server; obtaining start time of each transaction in a case that the concurrency conflict exists, wherein the start time is local time of the second node server when the transaction request is sent; and local time of the second node server is synchronized with time of the GPS atomic clock server in an area which the second node server locates; processing all transactions by the first node server according to the sequence of the start time of each transaction. Throughput of distributed database system can be increased and an arrangement complexity of servers is reduced.

Abstract: A distributed database transaction processing method and device based on a GPS atomic clock, the method includes: receiving a plurality of transaction requests by the first node server; determining a concurrency conflict between transaction requests received by the first node server; obtaining start time of each transaction in a case that the concurrency conflict exists, wherein the start time is local time of the second node server when the transaction request is sent; and local time of the second node server is synchronized with time of the GPS atomic clock server in an area which the second node server locates; processing all transactions by the first node server according to the sequence of the start time of each transaction. Throughput of distributed database system can be increased and an arrangement complexity of servers is reduced.