Abstract: A service data processing method is provided, including: obtaining a target function and a constraint condition, where the constraint condition includes a constraint relationship between a plurality of variables, and the target function includes at least one variable of the plurality of variables; selecting an initial variable from the plurality of variables for a base variable group; sorting optimized values of variables in a non-base variable group to obtain a maximum heap structure, where each node in the maximum heap structure stores an identifier of a variable and an optimized value corresponding to the variable; updating the non-base variable group and the base variable group based on a first target variable; and obtaining a solving target of a service problem based on a variable in an updated base variable group and the constraint condition.

Abstract: A system for examining service certifications with multi-sides based on customer experiences is provided, including: a database, an analysis processor, a certification system, an accreditation system, a registration system for a certification officer to register, an internal system of a service firm and a mobile terminal. A first time certification is performed on services from the service firm by the certification system to obtain a service certification credential. A first QR code is identified to obtain an organization name of the certification organization, basic information of the service certification credential, accreditation information of the accreditation system, registration information of the certification officer registered in the registration system and authorization information, authorized by the Certification and Accreditation Administration, for carrying out service certification businesses of the certification organization.

Abstract: A system for examining service certifications with multi-sides based on customer experiences is provided, including: a database, an analysis processor, a certification system, an accreditation system, a registration system for a certification officer to register, an internal system of a service firm and a mobile terminal. A first time certification is performed on services from the service firm by the certification system to obtain a service certification credential. A first QR code is identified to obtain an organization name of the certification organization, basic information of the service certification credential, accreditation information of the accreditation system, registration information of the certification officer registered in the registration system and authorization information, authorized by the Certification and Accreditation Administration, for carrying out service certification businesses of the certification organization.

Abstract: Provided are a method and an apparatus for forming a nanometer-order polarization-reversed region in a ferroelectric single crystal, and a device using the ferroelectric single crystal. The method according to the present invention for forming a polarization-reversed region in a ferroelectric single crystal includes the steps of grounding a first surface of the ferroelectric single crystal, and irradiating a second surface of the ferroelectric single crystal opposite to the first surface with an ion beam. The ion beam is irradiated such that the charge density Q (?C/cm2) accumulated on the second surface irradiated with the ion beam satisfies the following relationship: 0.7×Ps?Q?5×Ps where Ps is the spontaneous polarization (?C/cm2) of the ferroelectric single crystal.

Abstract: Provided are a method and an apparatus for forming a nanometer-order polarization-reversed region in a ferroelectric single crystal, and a device using the ferroelectric single crystal. The method according to the present invention for forming a polarization-reversed region in a ferroelectric single crystal includes the steps of grounding a first surface of the ferroelectric single crystal, and irradiating a second surface of the ferroelectric single crystal opposite to the first surface with an ion beam. The ion beam is irradiated such that the charge density Q (?C/cm2) accumulated on the second surface irradiated with the ion beam satisfies the following relationship: 0.7×Ps?Q?5×Ps where Ps is the spontaneous polarization (?C/cm2) of the ferroelectric single crystal.