Abstract: Disclosed is a contaminated site sampling robot and an intelligent sampling method thereof. The robot includes a body with a walking mechanism, vision sensing system, drilling mechanism, and negative-pressure suction mechanism. The walking mechanism features two servo motors within a mounting platform, with track wheels attached to the servo motors' output ends. The vision sensing system comprises a supporting frame at one end of the mounting platform, equipped with a vision sensing camera and radar sensor. The drilling mechanism consists of a U-shaped base on the mounting platform's top, with a mechanical arm and drilling machine mounted at one end. The negative-pressure suction mechanism includes a U-shaped box on the mounting platform's middle part, housing a vacuum cleaner whose dust outlet connects to a sample collecting box. This setup allows for optimal path identification, positioning, obstacle avoidance, and control of sampling conditions, facilitating intelligent sampling of contaminated sites.

Abstract: Embodiments of the present disclosure provide a method, a device and a computer program product for managing data replication. According to example implementations of the present disclosure, a replication policy model associated with data replication of a source device can be obtained, which is determined based on historical status information of the source device and a historical replication policy corresponding to the historical status information; current status information of the source device is determined, wherein the current status information indicates status information associated with pending data replication of the source device; and a target replication policy is determined based on the replication policy model and the current status information, which indicates a replication policy to be applied for performing the pending data replication.

Abstract: Embodiments of the present disclosure provide methods, apparatus, and computer storage media for application error diagnosis. The method of application error diagnosis may include obtaining information related to an error in an application, generating a code of the information related to the error in the application, determining a similarity between the code and at least one predetermined code, wherein the at least one predetermined code is being associated with a known software bug. The method further includes determining at least one software bug related to the error in the application by comparing the similarity with a predetermined threshold.

Abstract: Embodiments of the present disclosure provide methods, apparatus, and computer storage media for application error diagnosis. The method of application error diagnosis may include obtaining information related to an error in an application, generating a code of the information related to the error in the application, determining a similarity between the code and at least one predetermined code, wherein the at least one predetermined code is being associated with a known software bug. The method further includes determining at least one software bug related to the error in the application by comparing the similarity with a predetermined threshold.

Abstract: Embodiments of the present disclosure provide a method, a device and a computer program product for managing data replication. According to example implementations of the present disclosure, a replication policy model associated with data replication of a source device can be obtained, which is determined based on historical status information of the source device and a historical replication policy corresponding to the historical status information; current status information of the source device is determined, wherein the current status information indicates status information associated with pending data replication of the source device; and a target replication policy is determined based on the replication policy model and the current status information, which indicates a replication policy to be applied for performing the pending data replication.

Abstract: An audio communication system, an audio transmitter and an audio receiver are described herein. In one aspect, the audio transmitter includes: An analog to digital converter configured to convert an analog audio signal into a digital audio signal; a digital compressor configured to compress the dynamic range of said digital audio signal; a digital modulator configured to modulate the compressed digital audio signal into a wireless communication signal; and the analog to digital converter, the digital compressor and the digital modulator are integrated in one integrated circuit. The described devices improve the compression and expansion device linearity, resulting in better match for the compressor at the transmitter and the expandor at the receiver.